A virgin Masashi who is excited by the premonition of her first experience when she is invited to take home by her beautiful older sister, Hanakoi, at a dating bar. However, Hanakoi is a queen who pretends to be an ordinary woman, and she is watching over the amateur guy ● -kun! ?? Wait for a sweet kiss, but eat enthusiastic slaps and whips! Although he is confused, he erects, the pain turns into pleasure, and the talent of de M who sleeps in Masoshi awakens ...!