Minami was asked to help out at her family's public bathhouse. Minami thought, "Only old men will come!" but... it was actually high school boys on their way home from club activities who came to take a bath! Minami can't stop Minami at young dicks, and the virgin boys can't stop getting hard because of the Ke'ai of the poster girl! The boys who learned the pleasure of sex became more and more obsessed with her...!?