Aki-Sora
English title: Aki Sora
Japanese title: あきそら
Alternative titles: Akisora, Autumn Sky
Type: OVA
Source: Manga
Episodes: 1
Status: Finished Airing
Aired: Dec 18, 2009
Duration: 21 min
Rating: R+ - Mild Nudity
Studios: Hoods Entertainment
Producers: Frontier Works, Akita Shoten
Genres: Erotica
Demographics: Seinen

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]

Aki-Sora was bundled with the release of the limited-edition third volume of the manga.