Teirui Makura 

Popular honor student little brother, Yuua, and his kind older brother, Seigo. One step ahead in the puberty department, Seigo tries to put a little distance between him and his cute little brother. However, the innocent little brother is to blame with his defenseless skinship. Finally, Seigo's lust consumes him and he can't endure anymore. Once Yuua accepted that idea, his desire to be attached to his brother grew stronger every day. From "Teirui Makura." To taste the forbidden fruit, a collection of love songs.