Reiko Otoware was selling leotards door-to-door, promoting their weight-loss benefits. One day, she visited Nao Kato's home, where she helped Nao put on one of the leotards and ended up showering together with her. From that moment, their relationship gradually develops into a full-fledged lesbian affair. The appeal lies in the unexpected emotional and physical connection that blossoms within the ordinary setting of a sales visit.