Uchida is invited to the home of his current manager to celebrate his promotion. He prepares for the party alone with the manager's wife, Rina, but something is not right. He is greeted by a barrage of panty shots that cannot be dismissed as coincidence, and his mouth waters. (Could this be an invitation?) He struggles to erase the indecent thoughts that arise in his mind, but Rina's seduction is unstoppable. On the contrary, she presses her breasts against him...