Aoi’s cheerful smile, cute looks, and sweet personality make her hugely popular with men. Although she only recently broke up with her boyfriend, she already has a new one. Driven by jealousy and their deep affection for the adult sister they have doted on since childhood, her brothers begin to lust after her body. Aoi knows that having sex with her brothers is wrong, but the taboo and guilt only intensify the thrill until she loses herself in pleasure with them in this adult sibling role-play.