![](https://cdn.animecharacters.io/images/anime/large/4843-7eaff145.jpg)
Format
OVA
Episodes
1
Episode Duration
21 min
Status
Finished Airing
Premiered
Aired
2009-12-18 to ?
Source
Manga
Rating
R+ - Mild Nudity
Genres
Romance
Seinen
Erotica
Studios
Hoods Entertainment
Producers
Frontier Works
Akita Shoten
Licensors
Aki-Sora (あきそら)
Sora Aoi has always been close with his siblings. But while Nami may be his twin sister, he and his older sister Aki share a different kind of relationship. What began as an encounter with Aki in the bath led to a startling realization for Sora: he is in love with her. But while Sora is hesitant about his forbidden feelings, Aki confesses that she has always loved him. With their affections out in the open, the two begin a secret relationship. [Written by MAL Rewrite]