Kaoru no tiene las agallas para enfrentarse a uno de sus viejos amigos, Nanao, quien lo obliga a satisfacer sus necesidades sexuales mediante el chantaje. Un día, Nanao decide vengarse, usando a Mayu como carnada.
Kaoru is a high school student who does not have the guts to go against his old friend Nanao. Nanao keeps giving Kaoru sexual orders which he is forced to obey. One day he decides to take revenge. And for the revenge he will use his other classmate Mayu as his trump card.