Aki-Sora
Aki Sora revolves around Aki Aoi and Sora Aoi, a couple of close brothers and sisters that shared intimate relationship from childhood. During its adulthood, everyone comes to the realization of the true depths of love they feel to each other, and secretly absorb this love. They keep their younger sister by us, the twins of the Sora in the ignorance of their new relationships. We have no idea what is happening in his house, seeks to put his brother with his best friend's friend's soul. Despite these relationships, we also seem to have feelings for someone close to her, but keeps them secret.