The official website for the anime brand Prime Time announced that an original anime adaptation of little-cheese's Kuro to Kin no Akanai Kagi game has been green-lit for early winter next year.
In this otome game (game aimed at female players), the heroine Kanade Katagiri stopped going to school and became a hikikomori (shut-in) who never left her home. She then has a dream where a mysterious voice tells her to go out, and she steps outside for the first time in nearly a year. She encounters four young men with whom she develops yandere (seemingly caring yet unhealthy) relationships.
AnDerCen, a new brand spinoff from Prime Time (Tight-rope, Maiden Rose, Hey! Class President, A Foreign Love Affair, Kirepapa), is producing the anime. AnDerCen has not revealed if the anime will be for adults only or for general audiences, but Prime Time and AnDerCen say that they will provide the latest information about the anime soon.
The original adults-only adventure game shipped for Windows computers on December 4, 2010. It already inspired drama CDs and a manga.
If there was ever such an otome game with so much sex.