Aki Sora

The story of Aki Sora centers around Aki Aoi and Sora Aoi, two siblings who have shared a close bond since childhood. As they grow up, they both come to realize the depth of their love for each other and eventually consummate it in secret. They keep their younger twin sister, Nami, unaware of their new relationship. Nami, oblivious to what is happening within her family, tries to set her brother up with her best friend, Kana Sumiya. Despite these romantic connections, Nami also seems to have feelings for someone close to her, but chooses to keep them hidden.