In the morning, when she is cleaning in front of her apartment building, a bratty boy with a smug attitude always comes by. He takes advantage of Yukari's kindness, calling her a "frustrated old woman" and squeezing her voluptuous breasts before running away. However, on this day, Yukari finally reaches her limit, and grabs the boy by force and drags him into her room, where she mounts him in a way that adolescent boys hate the most, planting a trauma in his delicate crotch. The boy, who has fallen prey to humiliating play for the first time in his life, is in a daze and barely manages to escape home...