Injuu Gakuen EX
English title: Lady Blue
Japanese title: 淫獣学園 EX
Type: OVA
Episodes: 4
Source: Manga
Genres: Hentai
Studios: Arms
Producers: Daiei
Duration: 30 min per ep
Rating: Rx - Hentai

Miko Mido has fallen in love for the first time. Too bad for her that she hasn't the time to pursue the man of her dreams. There is a mysterious female ghost which is attacking Miko's schoolmates and stealing their life-force, and someone has to investigate the case. However, it seems that the ominous phantom is willing to pursue Miko's love interest, too...

(Source: ANN)