Violated by an adult's extra thick penis... Tomoko, an ordinary and serious high school girl, is forced to lose her chastity to a rough man at her part-time job with his club-like penis. She is shocked by the way he thrusts his penis into her without restraint, driven by his desire, but she soon awakens to her own true sexuality, something she had never noticed before... This is the obscene story of a girl who becomes addicted to big penises.