Houkago: Nureta Seifuku
English title: After Class Lesson
Japanese title: 放課後 ～濡れた制服～
Type: OVA
Episodes: 3
Source: Visual novel
Genres: Hentai
Studios: T-Rex
Producers: Milky Animation Label, MS Pictures
Duration: 29 min per ep
Rating: Rx - Hentai

Shibui Ryuji is a teacher of a girl school whose students are born in well-off families. All students hate him because of his figure and perverted nature. However, he happens to know the weakness of Tenkawa Ayumi, so he raped her. Tasting blood, he begins to rape his students, one after another taking advantages of their weakness.

(Source: AnimeNfo)