Even after graduating high school, adult Makoto still spends his days running errands for an intimidating hometown senior. He has no girlfriend and is constantly teased by other men, until Aya—the feared senior's girlfriend—stops him one day. Mocking the virgin, she takes his hand and pulls him into a love hotel. Makoto knows she is the one woman he must never touch, but his pent-up desire wins and he crosses the line, having sex with her and repeatedly ejaculating inside.