was the ninth shikken

Shikken

The was the regent for the shogun in the Kamakura shogunate in Japan. The post was monopolized by the Hōjō clan, and this system only existed once in Japanese history, between 1203 and 1333...

(regent) of the Kamakura shogunate

Kamakura shogunate

The Kamakura shogunate was a military dictatorship in Japan headed by the shoguns from 1185 to 1333. It was based in Kamakura. The Kamakura period draws its name from the capital of the shogunate...

 (reigned 1284 - 1301), and Tokuso

Tokuso

Tokusō was the title held by the head of the mainline Hōjō clan, who monopolized the position of shikken of the Kamakura shogunate in Japan....

 (de facto ruler of Japan) from his appointment as regent until his death.

Born to the regent Tokimune

Hojo Tokimune

of the Hōjō clan was the eighth shikken of the Kamakura shogunate , known for leading the Japanese forces against the invasion of the Mongols and for spreading Zen Buddhism and by extension Bushido among the warrior class.- Life :Born as the eldest son of the regent and Tokuso Tokiyori of the...

 and his wife from the Adachi

Adachi clan

The Adachi clan is a family of samurai who are said to have been descended from Fujiwara no Yamakage. Their historical significance derives from their successes during the Genpei War and their subsequent affiliation with the Hōjō clan....

 family, Sadatoki became a shikken at age 14 upon the death of his father. Sadatoki was under the guardianship of Taira Yoritsuna.

Shimotsuki Incident

The Hōjō clan had variously defeated many rival families - leaving only the Adachi clan

Adachi clan

The Adachi clan is a family of samurai who are said to have been descended from Fujiwara no Yamakage. Their historical significance derives from their successes during the Genpei War and their subsequent affiliation with the Hōjō clan....

. The Adachis and Hōjōs had previously been allies, but a plot by Adachi Yasumori to usurp the Hōjō resulted in a Sadatoki authorising Taira Yoritsuna to attack the Adachi family. Taira Yoritsuna may have falsified the charges against Adachi Yasumori due to political rivalry. The attack occurred in 1285 and is known as the Shimotsuki Incident. It occurred near the Adachi residence and resulted in the near extermination of the Adachi family (500 deaths). Adachi Yasumori was Sadatoki's grandfather's son's brother's in-law.

Heizen Gate Incident

Sadatoki's soldiers killed Taira Yoritsuna and 90 of his followers in the Heizen Gate Incident (平禅門の乱, Heizenmon no Ran) in 1293. He did this purge in confusion after the 1293 Kamakura earthquake

1293 Kamakura earthquake

The 1293 Kamakura earthquake in Japan occurred at about 06:00 local time on 27 May, 1293. It had an estimated magnitude of 7.1–7.5 and triggered a tsunami. The estimated death toll was 23,024. It was Kamakura period in Japan, and serious damage was occurred in Kamakura...

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Regency ends and death

Sadatoki ended his regency and entered the priesthood in 1301. Some sources claim that, although secluded in a temple, he continued to administer Japan until his death in 1311. He is enshrined with his father and Hōjō Takatoki

Hojo Takatoki

Hōjō Takatoki was the last Tokuso and ruling Shikken of Japan's Kamakura shogunate; the latter ones were his puppets, a member of the Hōjō clan, he was the son of Hōjō Sadatoki, and was preceded as shikken by Hōjō Morotoki.Takatoki became regent at the age of eight, and thus actual power was...

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A mass requiem commemorating the 12th anniversary of Sadatoki's death took place at Engakuji in 1323. Jufukuji temple sent 260 priests.