List of major crimes in Japan
Encyclopedia
This is a list of documented major crimes in Japan.
Date Name Deaths Location Summary
1893 Kawachi Jūningiri 13 Osaka
Osaka Prefecture
is a prefecture located in the Kansai region on Honshū, the main island of Japan. The capital is the city of Osaka. It is the center of Osaka-Kobe-Kyoto area.- History :...

 
Kumataro Kido and Yagoro Tani
Kumataro Kido and Yagoro Tani
and were Japanese spree killers who killed 11 people, including an infant, on May 25, 1893, a spree known as . The roots of the killings were both emotional and financial. Kido lost his common-law-wife to a man named Torajirō Matsunaga, whose brother Denjirō bilked money from Kido and assaulted...

 murdered 10 people including an infant. The homicide was motivated by grudges against the victims. They committed suicide after the murders.
1923-1924 Sataro Fukiage
Sataro Fukiage
was a Japanese rapist and serial killer. He killed at least seven girls. He murdered his first victim in 1906, and killed six girls between 1923 and 1924. He was tried for three out of six cases, but his exact number of victims is unknown....

 
6? Kantō
Kanto region
The is a geographical area of Honshu, the largest island of Japan. The region includes the Greater Tokyo Area and encompasses seven prefectures: Gunma, Tochigi, Ibaraki, Saitama, Tokyo, Chiba, and Kanagawa. Within its boundaries, slightly more than 40 percent of the land area is the Kantō Plain....

 and Chūbu
Chubu region
The is the central region of Honshū, Japan's main island. Chūbu has a population estimate of 21,886,324 as of 2008.Chūbu, which means "central region", encompasses nine prefectures : Aichi, Fukui, Gifu, Ishikawa, Nagano, Niigata, Shizuoka, Toyama, Yamanashi, and often Mie.It is located directly...

 
Serial killer Sataro Fukiage
Sataro Fukiage
was a Japanese rapist and serial killer. He killed at least seven girls. He murdered his first victim in 1906, and killed six girls between 1923 and 1924. He was tried for three out of six cases, but his exact number of victims is unknown....

 raped and murdered six girls. He also raped and murdered a girl in 1906. Exact Victim Estimates are unknown but one theory puts the amount at 93 while another put it at more than 100. Fukiage was executed in 1926.
1925 Aoyama-kai / Mitani-kumi gang war 3+ near Yokohama
Yokohama
is the capital city of Kanagawa Prefecture and the second largest city in Japan by population after Tokyo and most populous municipality of Japan. It lies on Tokyo Bay, south of Tokyo, in the Kantō region of the main island of Honshu...

 
In one of the largest battles between Yakuza groups, members of the Aoyama-kai and around thirty gangs led by the Mitani-kumi are involved in a dispute over a construction contract for Tokyo Denryoku Construction in Kanagawa. Aoyama-kai is a subcontractor of Shimizu-gumi
Shimizu Corporation
is a leading architectural, engineering and general contracting firm, offering an integrated, comprehensive planning, design and build solutions for a broad range of construction and engineering projects worldwide...

 and Shimizu-gumi is losing trust due to Hazama-gumi's obstruction, which is regarded as Mitani-kumi's instruction. After six hours of fighting, reports between 600 to 2,000 gangsters are involved with weapons including rifles, pistols, swords and farm implements. The Tokyo police and the Kempei-Tai were called in after the Kawasaki police became unable to handle the situation and, although Japanese officials declared martial law, fighting did not end until a cannon was brought in by the Aoyama-gumi. The battle injures over 150 people and kills at least three.
1936 Sada Abe
Sada Abe
is remembered in Japan for erotically asphyxiating her lover, , on May 18, 1936, and then cutting off his penis and testicles and carrying them around with her in her handbag...

 
1 Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 
Sada Abe
Sada Abe
is remembered in Japan for erotically asphyxiating her lover, , on May 18, 1936, and then cutting off his penis and testicles and carrying them around with her in her handbag...

 and Kichizo Ishida (her lover) engaged in Erotic asphyxiation
Erotic asphyxiation
Erotic asphyxiation or breath control play is the intentional restriction of oxygen to the brain for sexual arousal. The sexual preference for that behavior is variously called asphyxiophilia, autoerotic asphyxia, hypoxyphilia. Colloquially, a person engaging in the activity is sometimes called a...

 resulting in his death. When he died she then cut off his penis and testicles and carried them around with her in a handbag. Because her way of killing him was erotic, her crime gave inspiration to Japanese films, such as Nagisa Oshima
Nagisa Oshima
is a Japanese film director and screenwriter. After graduating from Kyoto University he was hired by Shochiku Ltd. and quickly progressed to directing his own movies, making his debut feature A Town of Love and Hope in 1959....

's In the Realm of the Senses
In the Realm of the Senses
is a 1976 Franco-Japanese romantic drama film directed by Nagisa Oshima. It is a fictionalised and sexually explicit treatment of an incident from 1930s Japan, that of Sada Abe...

.
1938 Tsuyama massacre
Tsuyama massacre
The was a spree killing that occurred on 21 May 1938 in the rural village of Kaio close to Tsuyama city in Okayama, Japan.Mutsuo Toi, a 21-year-old man, killed 30 people, including his grandmother, with a shotgun, Japanese sword, and axe, and seriously injured three others before killing himself...

 
31 rural hamlets near Tsuyama, Okayama  After cutting off electricity to his village, 21-year old Mutsuo Toi proceeded to go on a late-night killing spree with a hunting rifle, sword, and axe before killing himself.
1941-1942 Hamamatsu serial murders 9-11 near Hamamatsu, Shizuoka
Shizuoka Prefecture
is a prefecture of Japan located in the Chūbu region on Honshu island. The capital is the city of Shizuoka.- History :Shizuoka prefecture was formed from the former Tōtōmi, Suruga and Izu provinces.The area was the home of the first Tokugawa Shogun...

 
A deaf boy Seisaku Nakamura
Seisaku Nakamura
was a Japanese man convicted for serial killings in his teenage years. He is also known as Hamamatsu Deaf Killer. He was convicted of stabbing to death at least nine people, including several teenagers, in the Shizuoka Prefecture. The book, , which included the subject of the incident, was...

 murders people in Shizuoka. He attempts to rape women and murder his family. He is arrested for nine murders in 1942. He admits two other murders. He is sentenced to death.
1944-1948 Kotobuki maternity hospital incident 103? Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 
A hospital director Miyuki Ishikawa
Miyuki Ishikawa
was a Japanese midwife and serial killer who is believed to have murdered many infants with the aid of several accomplices throughout the 1940s. It is estimated that her victims numbered between 85 to 169, however the general estimate is 103...

 fatal neglects against about a hundred babies. There are accomplices and the shinjuku word office is suspected of approval for the murders.
1945-1946 Yoshio Kodaira
Yoshio Kodaira
was a Japanese rapist and serial killer. He killed one person in 1932 and was later sentenced to death after being convicted of killing seven others in 1945 and 1946.- Life as a soldier :...

 
7-10 Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

, Tochigi
Tochigi Prefecture
is a prefecture located in the Kantō region on the island of Honshū, Japan. The capital is the city of Utsunomiya.Nikkō, whose ancient Shintō shrines and Buddhist temples UNESCO has recognized by naming them a World Heritage Site, is in this prefecture...

 
Japanese ex-soldier Yoshio Kodaira
Yoshio Kodaira
was a Japanese rapist and serial killer. He killed one person in 1932 and was later sentenced to death after being convicted of killing seven others in 1945 and 1946.- Life as a soldier :...

 rapes and murders ten women. In China, he murders Chinese soldiers as a soldier. He also kill his father-in-law in 1932. Kodaira is executed in 1949.
1948 Teigin Bank robbery 12 Shiina, Toshima, Tokyo Sixteen employees of a Teigin Bank branch are poisoned by cyanide after taking chemicals given to them by a man claiming to be from the health authorities who claimed they were medication to control a nearby dysentery outbreak. The man then stole 160,000 yen before making his escape. Twelve people died. Sadamichi Hirasawa
Sadamichi Hirasawa
was a Japanese tempera painter. He was convicted of mass poisoning and sentenced to death, though he is suspected to have been falsely charged and no justice minister signed his death warrant.-Teigin case:...

, a painter, was arrested several months later. Although sentenced to death, there were strong suspicions that he was wrongfully convicted, and successive Justice Ministers refused to sign his death warrant, resulting in a stay of execution. During his 33-year imprisonment he wrote his autobiography and died of natural causes in 1987.

(Alluded to in Ian Fleming's
Ian Fleming
Ian Lancaster Fleming was a British author, journalist and Naval Intelligence Officer.Fleming is best known for creating the fictional British spy James Bond and for a series of twelve novels and nine short stories about the character, one of the biggest-selling series of fictional books of...

 novel You Only Live Twice: "And down went the honourable medicine and down fell the honourable local manager and staff of the Imperial Bank of Japan. The medicine had been neat cyanide.")
1948-1952 Osen Korogashi incident 8 Chiba
Chiba Prefecture
is a prefecture of Japan located in the Kantō region and the Greater Tokyo Area. Its capital is Chiba City.- History :Chiba Prefecture was established on June 15, 1873 with the merger of Kisarazu Prefecture and Inba Prefecture...

, Shizuoka
Shizuoka Prefecture
is a prefecture of Japan located in the Chūbu region on Honshu island. The capital is the city of Shizuoka.- History :Shizuoka prefecture was formed from the former Tōtōmi, Suruga and Izu provinces.The area was the home of the first Tokugawa Shogun...

, Tochigi
Tochigi Prefecture
is a prefecture located in the Kantō region on the island of Honshū, Japan. The capital is the city of Utsunomiya.Nikkō, whose ancient Shintō shrines and Buddhist temples UNESCO has recognized by naming them a World Heritage Site, is in this prefecture...

 
Serial killer Genzo Kurita
Genzo Kurita
was a Japanese serial killer, who murdered eight people.- Murders :Kurita murdered two girlfriends in February 1948. On August 8, 1951, he raped and murdered a 24-year-old woman beside her baby. He then had sex with her corpse....

 murders eight people. He commits necrophilia with several victims and murders a family at the cliff called Osen Korogashi. He is executed in 1959.
1960 The assassination of Inejiro Asanuma
Inejiro Asanuma
Inejiro Asanuma was a Japanese politician, and head of the Japanese Socialist Party. Asanuma was noted for speaking publicly about Socialism and economic and cultural opportunities...

 
1 Hibiya
Hibiya
is a geographic name covering a part of Chiyoda ward . The zone along the Hibiya Street from Yūrakuchō to Uchisaiwaichō is Hibiya district. There are many residence indications, but some indications using this word, Hibiya, like Hibiya Park and Hibiya Station...

, Tokyo
The head of the Japan Socialist Party is stabbed to death by a 17-year old right-wing extremist
Uyoku dantai
Uyoku dantai are Japanese nationalist right-wing groups.In 1996, the National Police Agency estimated that there are over 1000 right wing groups in Japan with about 100,000 members in total.-Tennō period:...

 Otoya Yamaguchi
Otoya Yamaguchi
was a Japanese ultranationalist, a member of a right-wing Uyoku dantai group, who assassinated Inejiro Asanuma by wakizashi on October 12, 1960 at Tokyo's Hibiya Hall during a political debate in advance of parliamentary elections...

 at a televised rally.
1963 Murder of Yoshinobu Murakoshi 1 Taito, Tokyo
Taito, Tokyo
is one of the 23 special wards of Tokyo, Japan. In English, it calls itself Taito City.As of April 1, 2011, the ward has an estimated population of 168,909, with 94,908 households, and a population density of 16,745.86 persons per km². The total area is 10.08 km².-History:The ward was founded...

 
4 year-old Yoshinobu Murakoshi fails to come home from a local park; several days later his family receives a phone call demanding ransom. Police fail to apprehend the person who collected the ransom, and the case generated massive publicity. Two years later they identified Tamotsu Obara as the kidnapper, who admitted under questioning to have murdered the child.
1963-1964 Akira Nishiguchi
Akira Nishiguchi
was a Japanese serial killer and fraudster. He is most known for being able to confuse Japanese police into believing that he was only connected to fraud rather than the murders. While engaging in confidence scams, he murdered two people, was put on the most wanted list, and killed three others...

 
5 through Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 
Serial killer Akira Nishiguchi
Akira Nishiguchi
was a Japanese serial killer and fraudster. He is most known for being able to confuse Japanese police into believing that he was only connected to fraud rather than the murders. While engaging in confidence scams, he murdered two people, was put on the most wanted list, and killed three others...

 cheats people, escapes from police officers in Japan, and kills five people. He is executed in 1970. His crimes became the basis for a book by Ryuzo Saki
Ryuzo Saki
is a Japanese novelist, non-fiction writer, born in North Hamgyong, a province of what is now North Korea. He is interested with many crimes in Japan and published many books about Japanese crimes....

 and the Shohei Imamura
Shohei Imamura
was a Japanese film director. Imamura was the first Japanese director to win two Palme d'Or awards.His eldest son Daisuke Tengan is also a script writer and film director, and worked on the screenplays to Imamura's filmsThe Eel , Dr...

 film Vengeance is Mine
Vengeance is Mine
-Films:*Vengeance Is Mine *Vengeance Is Mine , a Japanese film*Vengeance Is Mine , by Michael Roemer*An alternate title for Sympathy for Mr...

.
1965 Zama and Shibuya shootings  1 Kanagawa Prefecture
Kanagawa Prefecture
is a prefecture located in the southern Kantō region of Japan. The capital is Yokohama. Kanagawa is part of the Greater Tokyo Area.-History:The prefecture has some archaeological sites going back to the Jōmon period...

, Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 
18-year old Misao Katagiri goes on a rampage with a rifle. He shoots two police officers in Zama city, Kanagawa prefecture then hijacks several cars. A gun battle between the gunman and hundreds of special police ensues at a gun store in Shibuya, Tokyo. He is suppressed by police and sentenced to death.
1968 Norio Nagayama's robbery spree 4 Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

, Kyoto
Kyoto
is a city in the central part of the island of Honshū, Japan. It has a population close to 1.5 million. Formerly the imperial capital of Japan, it is now the capital of Kyoto Prefecture, as well as a major part of the Osaka-Kobe-Kyoto metropolitan area.-History:...

, Hakodate, Nagoya 
A series of high-profile robberies in which 19-year old Norio Nagayama
Norio Nagayama
was a Japanese spree killer and novelist.-Biography:Nagayama was born in Abashiri, Hokkaidō and grew up in a broken home. He moved to Tokyo in 1965 and, while working in Tokyo's Shibuya district, witnessed the Zama and Shibuya shootings....

 robs people for their money after killing them with a handgun stolen from the US military. After controversial trials, the Supreme Court upholds Nagayama's death in 1990. He is executed in 1997.
1968 300 million yen robbery
300 million yen robbery
, also known as the 300 million yen affair or incident, was the single largest heist in Japanese history. It occurred on the morning of December 10, 1968 in Tokyo, Japan. As of 2011 it remains unsolved.-Robbery:...

 
- Fuchū, Tokyo
Fuchu, Tokyo
is a city located in western Tokyo Metropolis, Japan. As of 2010, the city has an estimated population of 255,394 and a population density of 8,700 persons per km². The total area was 29.34 km²...

 
Disguised as a police officer, an unidentified man stops a security van belonging to the Toshiba Corporation near Tokyo's Fuchu Prison and, in the guise conducting a bomb search, hijacks the van successfully escaping with almost 300 million yen. Despite a massive investigation into what would become the largest robbery in Japanese history, neither the man or the money are ever found.
1968 Tochigi patricide case  1 Tochigi
Tochigi Prefecture
is a prefecture located in the Kantō region on the island of Honshū, Japan. The capital is the city of Utsunomiya.Nikkō, whose ancient Shintō shrines and Buddhist temples UNESCO has recognized by naming them a World Heritage Site, is in this prefecture...

 
Chiyo Aizawa murders her own father. She is an incest victim of her father. In 1973, the supreme court of Japan sentences her to a suspended sentence
Suspended sentence
A suspended sentence is a legal term for a judge's delaying of a defendant's serving of a sentence after they have been found guilty, in order to allow the defendant to perform a period of probation...

, saying that the article 200 of penal code is a breach of Japanese constitution. Her sentence becomes the first unconstitutional judgment for the supreme court.
1970 Inland Sea ferry hijacking 1 Hiroshima
Hiroshima
is the capital of Hiroshima Prefecture, and the largest city in the Chūgoku region of western Honshu, the largest island of Japan. It became best known as the first city in history to be destroyed by a nuclear weapon when the United States Army Air Forces dropped an atomic bomb on it at 8:15 A.M...

 and the Inland Sea 
An armed 20-year old escaping police hijacks a ferry and takes the crew and passengers hostage. He is shot dead by a police sniper the following morning.
1971 Kiyoshi Okubo
Kiyoshi Okubo
was a Japanese serial killer. Between March 31, 1971 and May 10, 1971, he raped and murdered eight women, ages 16 to 21. He used a pen name, Tanigawa Ivan .- Early life :...

 
8 Gunma Prefecture
Gunma Prefecture
is a prefecture of Japan located in the northwest corner of the Kantō region on Honshu island. Its capital is Maebashi.- History :The remains of a Paleolithic man were found at Iwajuku, Gunma Prefecture, in the early 20th century and there is a public museum there.Japan was without horses until...

 
Serial killer Kiyoshi Okubo
Kiyoshi Okubo
was a Japanese serial killer. Between March 31, 1971 and May 10, 1971, he raped and murdered eight women, ages 16 to 21. He used a pen name, Tanigawa Ivan .- Early life :...

 rapes and murders eight women during 41 days. Okubo is sentenced to death in 1973 and is executed in 1976.
1971-1972 Purge incident 12 Gunma prefecture
Gunma Prefecture
is a prefecture of Japan located in the northwest corner of the Kantō region on Honshu island. Its capital is Maebashi.- History :The remains of a Paleolithic man were found at Iwajuku, Gunma Prefecture, in the early 20th century and there is a public museum there.Japan was without horses until...

 
The United Red Army
United Red Army
The was a Japanese revolutionary armed group, established on 15 July 1971. It united the Red Army Faction, led in 1971 by Tsuneo Mori and the Maoist Revolutionary Left Wing of the Japanese Communist Party, led by Hiroko Nagata...

 torture and murder their twelve members in base camps. They call the murders "purification". The incident comes to light after the Asama-Sanso incident
Asama-Sanso incident
The was a hostage crisis and police siege in a mountain lodge near Karuizawa, Nagano prefecture, Japan that lasted from February 19, 1972 to February 28, 1972...

.
1972 Asama-Sanso incident
Asama-Sanso incident
The was a hostage crisis and police siege in a mountain lodge near Karuizawa, Nagano prefecture, Japan that lasted from February 19, 1972 to February 28, 1972...

 
2 Karuizawa, Nagano prefecture
Nagano Prefecture
is a prefecture of Japan located in the Chūbu region of the island of Honshū. The capital is the city of Nagano.- History :Nagano was formerly known as the province of Shinano...

 
5 armed left-wing militants of the United Red Army
United Red Army
The was a Japanese revolutionary armed group, established on 15 July 1971. It united the Red Army Faction, led in 1971 by Tsuneo Mori and the Maoist Revolutionary Left Wing of the Japanese Communist Party, led by Hiroko Nagata...

 hold up in a mountainside holiday lodge, taking one hostage. Amidst live TV coverage, police storm the lodge after a ten-day standoff, resulting in the deaths of two policemen.
1973 Kidnapping of Kim Dae-Jung  - Chiyoda, Tokyo
Chiyoda, Tokyo
is one of the 23 special wards in central Tokyo, Japan. In English, it is called Chiyoda ward. As of October 2007, the ward has an estimated population of 45,543 and a population density of 3,912 people per km², making it by far the least populated of the special wards...

 
South Korean dissident Kim Dae-Jung, later to be president, is kidnapped from his hotel room in Tokyo by KCIA agents and taken to South Korea.
1979 Mitsubishi Bank sporting gun kidnapping 5 Osaka
Osaka
is a city in the Kansai region of Japan's main island of Honshu, a designated city under the Local Autonomy Law, the capital city of Osaka Prefecture and also the biggest part of Keihanshin area, which is represented by three major cities of Japan, Kyoto, Osaka and Kobe...

 
Akiyoshi Umekawa
Akiyoshi Umekawa
was a Japanese mass murderer who killed a woman on December 16, 1963 and shot dead four people on January 26, 1979. Mass media also used a number of aliases, including Teruyoshi Umekawa, Terumi Umekawa, Akimi Umekawa and Akemi Umekawa. He was one of the rare criminals who was shot dead by Japanese...

 shoot dead four people in a Mitsubishi Bank. His motivation is probably robbery at first, but he takes about 40 hostages and does something he wants. Osaka police shoot dead him two days later.
1980 Shinjuku bus attack 6 Shinjuku, Tokyo
Shinjuku, Tokyo
is one of the 23 special wards of Tokyo, Japan. It is a major commercial and administrative center, housing the busiest train station in the world and the Tokyo Metropolitan Government Building, the administration center for the government of Tokyo.As of 2008, the ward has an estimated population...

 
A mentally disturbed man throws a bucket of petrol and a lit newspaper into a bus. The ensuing fire killed 6 and injured 14. He kills himself in 1997.
1982 Japan Airlines Flight 350
Japan Airlines Flight 350
Japan Airlines Flight 350 was a McDonnell Douglas DC-8-61, aircraft registration , on a domestic scheduled passenger flight from Fukuoka, Japan, to Tokyo. The airplane crashed 9 February 1982 on approach to Tokyo Haneda Airport in Tokyo Bay...

 
24 Tokyo Bay
Tokyo Bay
is a bay in the southern Kantō region of Japan. Its old name was .-Geography:Tokyo Bay is surrounded by the Bōsō Peninsula to the east and the Miura Peninsula to the west. In a narrow sense, Tokyo Bay is the area north of the straight line formed by the on the Miura Peninsula on one end and on...

 
A mentally disturbed Captain Seiji Katagiri forces the Japan Airlines Flight 350 to crash. 24 passengers are killed by the crash. He is arrested on suspicion of professional negligence resulting in deaths, but he isn't indicted due to his insanity.
1983 Kiyotaka Katsuta
Kiyotaka Katsuta
was a Japanese serial killer and thief.-Biography:Katsuta committed several murders and robbed several houses before being apprehended. The exact number of murders he committed is unknown. He killed his victims by strangling and shooting them....

 
8-22 Kansai and Chūbu
Chubu region
The is the central region of Honshū, Japan's main island. Chūbu has a population estimate of 21,886,324 as of 2008.Chūbu, which means "central region", encompasses nine prefectures : Aichi, Fukui, Gifu, Ishikawa, Nagano, Niigata, Shizuoka, Toyama, Yamanashi, and often Mie.It is located directly...

 
Kiyotaka Katsuta
Kiyotaka Katsuta
was a Japanese serial killer and thief.-Biography:Katsuta committed several murders and robbed several houses before being apprehended. The exact number of murders he committed is unknown. He killed his victims by strangling and shooting them....

 is arrested for a robbery-murder. However he is suspected of a total of 22 murders later, and he admits eight murders. Katsuta is executed in 2000.
1984 Glico Morinaga case
Glico Morinaga case
The , also known by its official designation , was a famous extortion case in 1980s Japan, primarily directed at the Japanese industrial confectioneries Ezaki Glico and Morinaga, and currently remains unsolved...

 
- Various, across Kansai
Kansai
The or the lies in the southern-central region of Japan's main island Honshū. The region includes the prefectures of Mie, Nara, Wakayama, Kyoto, Osaka, Hyōgo, and Shiga. Depending on who makes the distinction, Fukui, Tokushima and even Tottori Prefecture are also included...

 
A 17-month long series of extortion against confectionery companies starting in a kidnap of the president of Glico and involving confectionery spiked with cyanide
Cyanide
A cyanide is a chemical compound that contains the cyano group, -C≡N, which consists of a carbon atom triple-bonded to a nitrogen atom. Cyanides most commonly refer to salts of the anion CN−. Most cyanides are highly toxic....

.
1985-1989 Yama-Ichi War
Yama-Ichi War
The Yama–Ichi War was a yakuza conflict mainly fought in the Kansai region of Japan from 1985 to 1989, between the Yamaguchi-gumi and the Ichiwa-kai gangs....

 
29 Kansai
Kansai
The or the lies in the southern-central region of Japan's main island Honshū. The region includes the prefectures of Mie, Nara, Wakayama, Kyoto, Osaka, Hyōgo, and Shiga. Depending on who makes the distinction, Fukui, Tokushima and even Tottori Prefecture are also included...

 region
A Yakuza gang war between the Yamaguchi-gumi
Yamaguchi-gumi
is Japan's largest and most infamous yakuza organization. It is named after its founder Harukichi Yamaguchi. Its origins can be traced back to a loose labor union for dockworkers in Kobe pre-WWII....

 and the breakaway Ichiwa-kai
Ichiwa-kai
The Ichiwa-kai was a yakuza gang based in Osaka, Japan.It was formed on June 13, 1984 when Hiroshi Yamamoto, a top lieutenant in the Yamaguchi-gumi, broke from that gang to form his own organization with over 10,000 members...

 faction that began over the death of kumicho Kazuo Taoka
Kazuo Taoka
was one of the most prominent yakuza Godfathers.Known as the "Godfather of Godfathers", Taoka was third kumicho of the Yamaguchi-gumi, Japan's largest yakuza organization, from 1946 to 1981....

. After being passed over as kumicho, Hiroshi Yamamoto broke away from the Yamaguchi-gumi, formed the rival Ichiwa-kai, and had Taoko's successor, Masahisa Takenaka, murdered, along with two other Yamaguchi members. Following the assassination, Yamaguchi-gumi boss Kazuo Nakanishi
Kazuo Nakanishi
Kazuo Nakanishi was briefly the leader of the Yamaguchi-gumi yakuza syndicate in the chaotic years of the Yama-Ichi War...

 vows to wipe out the Ichiwa-kai. During the next few years, the two gangs would engage in an estimated 200 gun battles, killing 26 gangsters and seriously wounding many more, with local newspapers carrying daily "scorecards" of the latest body counts.
1988 Affair of the Four Children of Sugamo
Affair of the four abandoned children of Sugamo
The affair of the four abandoned children of Sugamo was an incident that took place in Japan in the late 1980s. The incident was covered extensively by both Japanese and international media, and became known in Japanese as...

 
1 Toshima, Tokyo  Four malnourished children are found in a Tokyo apartment nine months after their mother had left to travel with her boyfriend, during which time a fifth child was discovered to have been murdered by two friends of the oldest child.
1988-1989 Tsutomu Miyazaki
Tsutomu Miyazaki
, also known as The Otaku Murderer, The Little Girl Murderer, and Dracula, was a Japanese serial killer.-Background:Planaria's premature birth left him with deformed hands, which were permanently gnarled and fused directly to the wrists, necessitating him to move his entire forearm in order to...

 
4 Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 and Saitama prefecture
Saitama Prefecture
is a prefecture of Japan located in the Kantō region of the island of Honshu. The capital is the city of Saitama.This prefecture is part of the Greater Tokyo Area, and most of Saitama's cities can be described as suburbs of Tokyo, to which a large amount of residents commute each day.- History...

 
Serial killer Tsutomu Miyazaki
Tsutomu Miyazaki
, also known as The Otaku Murderer, The Little Girl Murderer, and Dracula, was a Japanese serial killer.-Background:Planaria's premature birth left him with deformed hands, which were permanently gnarled and fused directly to the wrists, necessitating him to move his entire forearm in order to...

 abducts and murders girls aged four to seven.
1988-1989 Concrete-Encased High School Girl murder  1 Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 
A 17-year-old boy Jo Kamisaku and three other boys abduct a high school girl Junko Furuta. They rape and assault her for 41 days. They murder her and encase her in concrete.
1989 Sakamoto family murder
Sakamoto family murder
On November 4, 1989, Tsutsumi Sakamoto , a lawyer working on a class action lawsuit against Aum Shinrikyo, a controversial and destructive "new religious movement" in Japan, was murdered, along with his wife and child, by perpetrators who broke into his apartment...

 
3 Yokohama
Yokohama
is the capital city of Kanagawa Prefecture and the second largest city in Japan by population after Tokyo and most populous municipality of Japan. It lies on Tokyo Bay, south of Tokyo, in the Kantō region of the main island of Honshu...

 
Tsutsumi Sakamoto, a lawyer working on a lawsuit against Aum Shinrikyo
Aum Shinrikyo
Aum Shinrikyo was a Japanese new religious movement. The group was founded by Shoko Asahara in 1984. The group gained international notoriety in 1995, when it carried out the Sarin gas attack on the Tokyo subway....

 doomsday cult
Doomsday cult
Doomsday cult is an expression used to describe groups who believe in Apocalypticism and Millenarianism, and can refer both to groups that prophesy catastrophe and destruction, and to those that attempt to bring it about...

 disappears with his wife and child. In 1995 it was revealed that cult members had murdered them and buried their bodies.
1990 Sapporo murder 1 Sapporo  Nagata Ryoji murders a robbery victim during a break-in at a Sapporo residence. Ryoji is subsequently added to the Japanese Ten Most Wanted Fugitives list.
1990 Gangland slaying of police officers 7 Okinawa
Okinawa Prefecture
is one of Japan's southern prefectures. It consists of hundreds of the Ryukyu Islands in a chain over long, which extends southwest from Kyūshū to Taiwan. Okinawa's capital, Naha, is located in the southern part of Okinawa Island...

 
Hideo Zamami, a member of the Kyokuryu-kai
Kyokuryu-kai
The is a yakuza criminal organization based on the Okinawa island of Japan, with an estimated membership of 210–270.Headquartered in Naha, Okinawa, the Kyokuryu-kai is one of the two designated yakuza groups in Okinawa Prefecture along with its splinter group Okinawa Kyokuryu-kai, and had been...

 affiliated Nishiki family, guns down two plainclothes Okinawa
Okinawa Prefecture
is one of Japan's southern prefectures. It consists of hundreds of the Ryukyu Islands in a chain over long, which extends southwest from Kyūshū to Taiwan. Okinawa's capital, Naha, is located in the southern part of Okinawa Island...

 police officers mistaking them for rival gangsters. Sentenced to life imprisonment, he later appealed the decision claiming he was innocent of the shooting and used a scapegoat. Although rejecting his appeal, the court denied the prosecution's request for the death penalty. A total of seven persons, including the two police officers and a high school boy, are killed during the battle.
1994 Matsumoto incident
Matsumoto incident
The Matsumoto incident was an act of domestic terrorism perpetrated by members of Aum Shinrikyo in Matsumoto, Japan, in Nagano prefecture, on the evening of June 27 and the morning of June 28, 1994....

 
7 Matsumoto, Nagano
Matsumoto, Nagano
is a city located in Nagano Prefecture, Japan. Matsumoto is designated as a Special City.-Outline:The new city of Matsumoto is the city comprising the mergers of the old city of Matsumoto and four villages. Matsumoto officially absorbed those villages without creating a new municipal...

 
Doomsday cult
Doomsday cult
Doomsday cult is an expression used to describe groups who believe in Apocalypticism and Millenarianism, and can refer both to groups that prophesy catastrophe and destruction, and to those that attempt to bring it about...

 Aum Shinrikyo
Aum Shinrikyo
Aum Shinrikyo was a Japanese new religious movement. The group was founded by Shoko Asahara in 1984. The group gained international notoriety in 1995, when it carried out the Sarin gas attack on the Tokyo subway....

 release sarin
Sarin
Sarin, or GB, is an organophosphorus compound with the formula [2CHO]CH3PF. It is a colorless, odorless liquid, which is used as a chemical weapon. It has been classified as a weapon of mass destruction in UN Resolution 687...

 nerve gas in a residential area in the world's first use of chemical weapons by a terrorist group.
1995 Tokyo Sarin Gas Attack
Sarin gas attack on the Tokyo subway
The Sarin attack on the Tokyo subway, usually referred to in the Japanese media as the , was an act of domestic terrorism perpetrated by members of Aum Shinrikyo on March 20, 1995....

 
12 Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 
Aum Shinrikyo
Aum Shinrikyo
Aum Shinrikyo was a Japanese new religious movement. The group was founded by Shoko Asahara in 1984. The group gained international notoriety in 1995, when it carried out the Sarin gas attack on the Tokyo subway....

 members conduct simultaneous attacks on multiple Tokyo Metro
Tokyo Metro
is one of two rapid transit systems making up the Tokyo subway system, the other being Toei. It is the most used subway system in the world in terms of annual passenger rides.-Organization:...

 trains using sarin
Sarin
Sarin, or GB, is an organophosphorus compound with the formula [2CHO]CH3PF. It is a colorless, odorless liquid, which is used as a chemical weapon. It has been classified as a weapon of mass destruction in UN Resolution 687...

 nerve gas, killing 12 and injuring more than 1000.
1995 Hachiōji supermarket murders 3 Hachiōji, Tokyo
Hachioji, Tokyo
is a city located in Tokyo, Japan, about 40 kilometers west of the center of the special wards of Tokyo.As of January 1, 2010, the city has an estimated population of 551,901 and a population density of 2,962.27/km². The total area is 186.31 km². It is the eighth largest city in the...

 
Three employees of a supermarket are found shot dead in a suspected robbery. Despite massive publicity, the case is still unsolved.
1997 Sakakibara Seito  2 Kobe
Kobe
, pronounced , is the fifth-largest city in Japan and is the capital city of Hyōgo Prefecture on the southern side of the main island of Honshū, approximately west of Osaka...

 
Over several months, a 14-year old boy attacks a total of four younger girls with a hammer or a knife, killing one of them. He then strangles and decapitates Jun Hase, a 11-year old boy, leaving his head in front of his school with a note stuffed in his mouth, and sends taunting letters to a newspaper. The nation is shocked when a 14 year old is arrested, and eventually prompted the government to lower the age of criminal responsibility from 16 to 14 in 2000.
1997 Murder of Masaru Takumi 2 Kobe
Kobe
, pronounced , is the fifth-largest city in Japan and is the capital city of Hyōgo Prefecture on the southern side of the main island of Honshū, approximately west of Osaka...

 
Masaru Takumi
Masaru Takumi
Masaru Takumi was a powerful Japanese organized crime figure assassinated in 1997. Until his death, he was the second-in-command and financial overseer of Japan's largest yakuza gang, the Yamaguchi-gumi...

, considered to be the heir apparent of Yakuza leader Yoshinori Watanabe
Yoshinori Watanabe
was a yakuza, the fifth kumicho of the Yamaguchi-gumi, Japan's largest yakuza organization. He became kumicho in 1989. He was known for a more low-key approach than his predecessors, partly due to an Anti-Gang law passed in 1992...

's Yamaguchi-gumi
Yamaguchi-gumi
is Japan's largest and most infamous yakuza organization. It is named after its founder Harukichi Yamaguchi. Its origins can be traced back to a loose labor union for dockworkers in Kobe pre-WWII....

 organization, is killed by rival Nakano-kai
Nakano-kai
The Nakano-kai was a notorious Osaka-based yakuza gang, founded by Taro Nakano in the years after World War 2. The Nakano-kai was known for its fierce bellicosity and thus sometimes dubbed the "Dojin-kai in the Yamaguchi-gumi".Before 1997, the Nakano-kai had been an affiliate of the Kobe-based...

 gangsters Kouji Ishihara, Nakaho Kiyohara and Toriyabara Kiyoteru at a popular Kobe
Kobe
, pronounced , is the fifth-largest city in Japan and is the capital city of Hyōgo Prefecture on the southern side of the main island of Honshū, approximately west of Osaka...

 hotel. During the attack, dentist Hirai Hiroshi was mistaken as a bodyguard for Takumi and is killed by a four gunman Takeshi Yoshida
Takeshi Yoshida
Takeshi Yoshida is chief engineer for the 2000 Toyota Corolla and a Senior Managing Director of Toyota Motor Corporation. In 2003, Yoshida was appointed as Managing Officer of the Lexus Development Center, to spearhead the luxury division's development of new platforms and technologies...

 whose killing of an innocent bystander would eventually lead to the Japanese government's prosecution of the Nakano-kai.
1998 Wakayama curry poisoning 4 Wakayama  Four people are killed and 63 injured after eating curry laced with arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...

 at a community festival in Wakayama. Masumi Hayashi
Masumi Hayashi (poisoner)
is a Japanese woman convicted of putting poison in a pot of curry being served at a 1998 summer festival in the Sonobe district of Wakayama, Wakayama Prefecture, Japan.-Summary:...

, the chief suspect, has been sentenced to death and is currently appealing.
1999 Okegawa stalking murder 2 Okegawa, Saitama
Saitama Prefecture
is a prefecture of Japan located in the Kantō region of the island of Honshu. The capital is the city of Saitama.This prefecture is part of the Greater Tokyo Area, and most of Saitama's cities can be described as suburbs of Tokyo, to which a large amount of residents commute each day.- History...

 
A stalker Kazuhito Komatsu murders 21-year-old Shiori Ino
Shiori Ino
was a 21-year-old Japanese female university student who was murdered on October 26, 1999. The murder exposed significant dereliction of duties in the Saitama Prefectural Police, brought about changes to legal treatment of stalking and is known as an example of media manipulation.-Murder:In January...

 with accomplices. The Police ignores her appeal before the murder and slanders her after the murder. A journalist Kiyoshi Shimizu determines criminals. Komatsu escapes and kills himself in Hokkaido.
2000 Niigata girl confinement incident - Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 
While investigating a domestic disturbance call, police discover a schoolgirl who had been kidnapped in 1990 and held prisoner in an upstairs apartment for over nine years by a mentally disturbed man, Nobuyuki Sato. The girl, Fusako Sano, was returned to her parents while Sato was hospitalized and eventually sentenced to 14 years imprisonment.
2000 Tokyo Bay Sinyo Bay Bank robbery 1 Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 
Tominaga Kazuyuki, a career criminal associated with the Yakuza
Yakuza
, also known as , are members of traditional organized crime syndicates in Japan. The Japanese police, and media by request of the police, call them bōryokudan , literally "violence group", while the yakuza call themselves "ninkyō dantai" , "chivalrous organizations". The yakuza are notoriously...

, successfully steals 46,000,000 yen after hijacking a delivery to a pachinko parlor in December 2000. During the robbery, the driver was gunned down by Kazuyuki and an unidentified Chinese accomplice.
2000 Hostess murders 2 Roppongi
Roppongi
is a district of Minato, Tokyo, Japan, famous as home to the rich Roppongi Hills area and an active night club scene. Many foreign embassies are located in Roppongi, and the night life is popular with locals and foreigners alike...

, Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 
Joji Obara
Joji Obara
is a convicted rapist who was accused of the rape and subsequent deaths of two women, British hostess Lucie Blackman in the summer of 2000 and Australian Carita Ridgway in 1992, and the rapes of six other women.-Background:...

, a prominent Osaka businessman, murders and dismembers British hostess Lucie Blackman. After the discovery of her body a year later, he was charged with her murder as well as similar charges against Australian hostess Carita Ridgeway and sexual assault charges against six other women. He was found not guilty of murdering Lucy Blackman due to lack of evidence, but was convicted of the other crimes.
2000 Setagaya family murder 4 Setagaya, Tokyo
Setagaya, Tokyo
is one of the 23 special wards of Tokyo in Japan. It is also the name of a neighborhood within the ward. The ward calls itself the City of Setagaya in English...

 
In an incident which shocked the nation, a family of four are murdered at their home in suburban Tokyo by an unknown intruder. Despite extensive investigations and a huge media coverage, the case remains unsolved.
2001 Hokuryo Clinic Incident 10? Sendai, Miyagi
Miyagi Prefecture
is a prefecture of Japan in the Tōhoku Region on Honshu island. The capital is Sendai.- History :Miyagi Prefecture was formerly part of the province of Mutsu. Mutsu Province, on northern Honshu, was one of the last provinces to be formed as land was taken from the indigenous Emishi, and became the...

 
A 89-year-old woman dies mysteriously in Koryo Clinic. A nurse Daisuke Mori
Daisuke Mori
is a Japanese nurse, who was convicted for giving lethal doses of the muscle relaxant drug Vecuronium to his patients in a clinic in Izumi-ku, Sendai, Miyagi Prefecture. He was suspected as a medical serial killer, though he was convicted of one murder....

 is suspected of at least 10 murders. He is arrested for a murder, but he insists that their death are caused by medical errors.
2001 Osaka School Massacre
Osaka school massacre
The Osaka School Massacre took place on June 8, 2001, at Ikeda Elementary School, an elite primary school affiliated with Osaka Kyoiku University in Osaka Prefecture, Japan.- The attack :...

 
8 Osaka
Osaka
is a city in the Kansai region of Japan's main island of Honshu, a designated city under the Local Autonomy Law, the capital city of Osaka Prefecture and also the biggest part of Keihanshin area, which is represented by three major cities of Japan, Kyoto, Osaka and Kobe...

 
37 year old former janitor Mamoru Takuma
Mamoru Takuma
was a Japanese janitor who committed mass murder of 8 people and wounded 15 others in the 2001 Osaka school massacre. He had been convicted and imprisoned for rape before the massacre.- Early life :...

 entered an elementary school in Osaka, then used a kitchen knife to kill 8 students. He wounded an additional 13 other students and 2 teachers. He was executed in 2004.
2001 Myojo 56 building fire
Myojo 56 building fire
The began in the Kabukicho section of Shinjuku, Tokyo at about 01:00 local time on September 1, 2001. The fire, the fifth-deadliest in post-war Japanese history, claimed 44 lives and burned for five hours before being extinguished...

 
44 Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 
A building is fired in Kabukicho
Kabukicho
is an entertainment and red-light district in Shinjuku, Tokyo, Japan. Kabukichō is the location of many hostess bars, host bars, love hotels, shops, restaurants, and nightclubs, and is often called the "Sleepless Town"...

. Three employees can escape by jumping from the third floor of the building, but 44 people are killed by carbon monoxide
Carbon monoxide
Carbon monoxide , also called carbonous oxide, is a colorless, odorless, and tasteless gas that is slightly lighter than air. It is highly toxic to humans and animals in higher quantities, although it is also produced in normal animal metabolism in low quantities, and is thought to have some normal...

 in the building. The cause is strongly suspected as arson. However security is poor in Kabukicho and customers use false names. The case is still unsolved.
2002 Kitakyushu serial murders 7 Kitakyūshū  Futoshi Matsunaga
Futoshi Matsunaga
is a Japanese serial killer who both defrauded and tortured his victims. He was convicted of six murders and one manslaughter, including two children, between the years 1996 and 1998. He murdered his victims with an accomplice, Junko Ogata....

 forces the victims to kill each other, resulting in killing 7 people between 1996 and 1998. Matsunaga and his common-law wife Junko Ogata
Junko Ogata
is a Japanese woman who acted as an accomplice to serial killer Futoshi Matsunaga.-Early life and murders:Ogata was born on Kurume, Fukuoka Prefecture, and grew up in a wealthy family. She was Matsunaga's schoolmate in high school, but she did not know him very well, and he transferred to another...

 are arrested in 2002 after a girl escapes from them.
2003 Super Free
Super Free
or its shortened form was an inter-university rave event club, mainly comprising students of Waseda University, The leader of the club along with various students from Waseda and other universities in Tokyo was arrested and convicted for rape and subsequently, the club was dubbed by several...

 rape incident
- Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

 
Students of Japanese universities in Tokyo rape women in a circle Super Free. A organizer Shinichiro Wada and 13 other members are arrested for gang rapes. The estimated number of rape victims are up to 500.
2003 Fukuoka family murder 4 Fukuoka
Fukuoka Prefecture
is a prefecture of Japan located on Kyūshū Island. The capital is the city of Fukuoka.- History :Fukuoka Prefecture includes the former provinces of Chikugo, Chikuzen, and Buzen....

 
Businessman Shinjiro Matsumoto, his wife Chika and two children aged 11 and 8 are murdered in a robbery by three Chinese students who broke into their home, and their bodies dumped in Hakata Bay. Two of the three - Yang Ning and Wang Liang fled to China where they were arrested. Yang was executed and Wang sentenced to life imprisonment. The third, Wei Wei, was arrested in Japan and is currently on death row.
2004 Sasebo slashing  1 Sasebo, Nagasaki
Sasebo, Nagasaki
is a city located in Nagasaki Prefecture, Japan. As of 2011, the city has an estimated population of 259,800 and the density of 609 persons per km². The total area is 426.47 km². The locality is famed for its scenic beauty. The city includes a part of Saikai National Park...

 
Satomi Mitarai, a 12 year old elementary student, is stabbed to death by her classmate at school. The classmate has not been identified for legal reasons.
2004 Ōmuta murders
Omuta murders
The were committed by the leader family of . The yakuza gang was based in Omuta, Fukuoka, Japan, and was affiliated with the Dojin-kai syndicate. The four family members were sentenced to death for the murder of four people between 18 September and 20 September 2004....

 
4 Ōmuta, Fukuoka
Omuta, Fukuoka
is a city located in Fukuoka Prefecture, Japan.As of January 1, 2010, the city has an estimated population of 127,126 and the density of 1,558.87 persons per km²...

 
Mob wife Mami Kitamura murders four people with her husband and two sons. The four people are sentenced to death.
2004 Murder of Kaede Ariyama 1 Nara
Nara Prefecture
is a prefecture in the Kansai region on Honshū Island, Japan. The capital is the city of Nara.-History:The present-day Nara Prefecture was created in 1887, making it independent of Osaka Prefecture....

 
Kaede Ariyama, a 7 year old school girl, is kidnapped and murdered by a local newspaper deliveryman Kaoru Kobayashi. Following his arrest, he was convicted and sentenced to the death penalty.
2005 Web suicide site murders 3 Osaka Serial killer Hiroshi Maeue
Hiroshi Maeue
, aka "Suicide Website Murderer", was a Japanese serial killer, who lured his victims via the internet and killed three people in 2005.Maeue suffered from a paraphilic psychosexual disorder which translated into being unable to achieve sexual release absent of performing an act of...

 murders three people. They are lured by Maeue via the online suicide club. He has been executed.
2005 Murder of Airi Kinoshita
Murder of Airi Kinoshita
In 2005, , who was a seven year old first grade student from the Japanese city of Hiroshima, was sexually assaulted and murdered by Jose Manuel Torres Yake . He assumed the false name Juan Carlos Pizarro Yagi...

 
1 Hiroshima
Hiroshima
is the capital of Hiroshima Prefecture, and the largest city in the Chūgoku region of western Honshu, the largest island of Japan. It became best known as the first city in history to be destroyed by a nuclear weapon when the United States Army Air Forces dropped an atomic bomb on it at 8:15 A.M...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 
7-year old Airi Kinoshita is abducted on her way home from school and killed by wanted Peruvian sex offender Jose Manuel Torres Yake. He was sentenced to life.
2006 Five dead bodies in Hiratsuka 5 Hiratsuka, Kanagawa
Kanagawa Prefecture
is a prefecture located in the southern Kantō region of Japan. The capital is Yokohama. Kanagawa is part of the Greater Tokyo Area.-History:The prefecture has some archaeological sites going back to the Jōmon period...

 
Five dead bodies are found in Hiratsuka. A woman Chizuko Okamoto
Chizuko Okamoto
In 2005 at Hiratsuka, Kanagawa Prefecture, Japan, was murdered and her mother was later convicted of killing her own daughter. Chizuko Okamoto was also suspected as a serial killer who might have killed at least four others, but was not charged...

 is arrested for a murder of her daughter, but the case is hardly solved due to lack of evidence and statute of limitations.
2007 Iccho Itoh Murder 1 Nagasaki  The mayor of Nagasaki, Iccho Itoh
Iccho Itoh
, born , was the mayor of the Japanese city of Nagasaki; he first took office in 1995. He was a graduate from Waseda University, and majored in political science.-Career:...

, is shot to death by Tetsuya Shiroo
Tetsuya Shiroo
is the former leader of the Suishin-kai, a Nagasaki-based yakuza group affiliated with the Yamaguchi-gumi, the largest yakuza organization in Japan.On April 17, 2007, Shiroo shot Iccho Itoh, the mayor of Nagasaki, who died early the next morning....

. Shiroo is a member of the Yamaguchi-gumi crime syndicate and was angry over damage to his car that occurred at a city construction site four years earlier.
2007 Murder of Hiroshi Miyamoto 7 Saga and Fukuoka Gangs, who belong to Dojin-kai
Dojin-kai
The is a yakuza organization headquartered in Kurume, Fukuoka on the Kyushu island of Japan, a designated yakuza syndicate, with approximately at least 850 members....

, dispute about its leader. Kyushu Seido-kai
Kyushu Seido-kai
The is a yakuza organization based in Fukuoka Prefecture on the Kyushu island of Japan, with an estimated 380 active members. Headquartered in the southern Fukuoka region of Omuta, the Kyushu Seido-kai maintains its offices in five other prefectures including Tokyo....

 separates from Dojin-kai and they kill each other. They kill six gangs and a civilian Hiroshi Miyamoto.
2008 Akihabara massacre
Akihabara massacre
The was an incident of mass murder that took place on Sunday, June 8, 2008, in the Akihabara shopping quarter for electronics, video games and comics in Sotokanda, Chiyoda, Tokyo, Japan.At 12:33 p.m...

 
7 Akihabara
Akihabara
, also known as , is an area of Tokyo, Japan. It is located less than five minutes by rail from Tokyo Station. Its name is frequently shortened to in Japan...

25-year old Tomohiro Kato rams a truck into a crowd of shoppers and proceeds to stab the run-down victims, killing six men, one woman, and injuring 11 others. The perpretator is currently sentenced to death.
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