Bakunyuu Shimai
English title: Bomb Milk Sisters
Japanese title: 爆乳姉妹
Type: OVA
Episodes: 2
Source: Original
Genres: Hentai
Studios: Y.O.U.C
Producers: Digital Works
Duration: 29 min per ep
Rating: Rx - Hentai

One night, whilst impoverished student Tashiro Shinji was sleeping in his apartment, a beautiful and naked girl appeared in a flash of light. In fact, she's actually an alien named Julia who is searching for her elder sister.

(Source: AnimeNfo)