is the thirty-first single by Japanese musical artist Gackt

Gackt

is a Japanese singer-songwriter, actor, voice actor and author. Usually referred to by his mononymous stage name, he is known for his career as a solo artist and as the former vocalist for the defunct visual kei rock band Malice Mizer....

. This single is the first of four singles of the 10 Year Anniversary Countdown which is a countdown to Gackt's 10th anniversary as solo artist. This single has been titled The 1st Heaven. Each of the countdown singles is scheduled to be released within a week of each other.

"Koakuma"

With its music video, Koakuma Heaven features a total of 15 female models who have appeared on the popular gal

Gyaru

is a Japanese transliteration of the English word gal, that of girl being . The name originated from a 1970s brand of jeans called "gals", with the advertising slogan: "I can't live without men", and was applied to fashion- and peer-conscious girls in their teens and early twenties. Its usage...

 magazine Koakuma Ageha.

CD

1. "Koakuma Heaven" (小悪魔ヘヴン )
2. "My Father's Day"
3. "Koakuma Heaven" (小悪魔ヘヴン ) -Instrumental-
4. "My Father's Day" -Instrumental-

Chart performance

Release	Provider(s)	Chart	Peak position
June 10, 2009	Oricon Oricon , established in 1999, is the holding company at the head of a Japanese corporate group that supplies statistics and information on music and the music industry in Japan. It started as , which was founded by Sōkō Koike in November 1967 and became known for its music charts. Oricon Inc...	Daily Singles	3
		Weekly Singles	6
		Monthly Singles	30