Sinopsis
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.
Trailer
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