After missing the last train, a man is invited home by Kodama, the breathtaking senior from his part-time job. On the walk, she gently listens as he admits that his girlfriend may be cheating and their relationship is falling apart. Over drinks, Kodama hugs him and suggests that if he is still upset, perhaps he should kiss someone else too. His restraint snaps, and they spend a night having sex so passionately that he no longer cares whether he breaks up with his girlfriend.