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JAST Co., Ltd.


Founded in 1985, JAST was the first established Japanese company that uniquely specialized in eroge. They gained prominence with their Tenshitachi no Gogo series, which are considered the first adult games with distinctive anime aesthetics. Notable adult software brands (such as FairyTale) started off as independent groups initially consisting of former JAST employees. The company became defunct in 2001.


Hentai Anime Poker(1999)
Three Sisters' Story(1996)
Setsujuu: Yuganda Kioku(1996)
Runaway City(1995)
Tenshitachi no Gogo Collection 2(1995)
Tenshitachi no Gogo: TenkĊsei(1995)
Tenshitachi no Gogo Collection(1995)
Super Ultra Machine Cyborg Marilyn DX(1994)
Tenshitachi no Gogo VI: My Fair Teacher(1993)
Tenshitachi no Gogo IV(1991)
Tenshitachi no Gogo III: Ribbon(1989)
Tenshitachi no Gogo III: Bangai-hen(1989)
Tenshitachi no Gogo II: Bangai-hen(1988)
Tenshitachi no Gogo II: Minako(1987)
Tenshitachi no Gogo(1985)


JAST stands for Japan System Technology.

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