Injuu Gakuen La☆Blue Girl: Fukkatsu-hen
English title: La Blue Girl Returns
Japanese title: 淫獣学園 La☆Blue Girl 復活篇
Type: OVA
Episodes: 4
Source: Manga
Genres: Hentai
Studios: Arms
Producers: Green Bunny
Duration: 29 min per ep
Rating: Rx - Hentai

A race of butterfly-demons named the Mahoroba want to enslave Miko Mido and her sister to steal them the seal case that control the Shikima. Their ultimate goal is to conquer the Shikima Brain, a legendary place of the Shikima realm which is said to confer the power to rule the universe.

(Source: ANN)