Inyouchuu The Animation
Japanese title: 淫妖蟲～凌触学園退魔録～
Alternative titles: Inyouchuu ~Ryoushoku Gakuen Taimaroku~, Inyouchuu ~Ryoushoku Gakuen Taimaroku~ The Animation
Type: OVA
Source: Visual novel
Episodes: 2
Status: Finished Airing
Aired: Oct 31, 2006 to Dec 26, 2008
Duration: 29 min per ep
Rating: Rx - Hentai
Studios: Suzuki Mirano
Producers: Anime Antenna Iinkai
Genres: Supernatural, Hentai
Themes: School

Three students are in a school late at night fighting supernatural enemies.  As they are about to leave, they get attacked and trapped.  Based off the Inyouchuu game.