OL Yuki, who commutes by train. Days spent working late and taking the last train home. One night, a younger man sitting across from her on the train is kind to her. A woman who secretly kisses a sleeping man. Day after day, kissing without getting caught. One day, after a man noticed the kiss and things got awkward, it escalated to handjob and sex in an empty train car. After passing their respective stations, the two got off at some nameless station and spent the night at a hotel.
