Satoshi just got married to Miki, but he doesn't have much time for her. With an upcoming meeting, he needs to finish his presentation urgently. Hinata, his colleague and also a close friend of Miki, suddenly appears. Seeing that Satoshi hasn't finished yet, she helps him out a bit. She also goes to get coffee for Satoshi but accidentally spills it all over him. Unable to go home in this condition, Hinata suggests Satoshi come to her place to change his clothes, as she still has her ex-boyfriend's clothes. Upon arriving at her place, Hinata immediately puts on a very revealing outfit, her nipples peeking through the thin fabric causing Satoshi's penis to quickly become erect. The last train is about to depart, not knowing what to do, Hinata asks about Satoshi and Miki's relationship, even inquiring about their sex life. Despite being a newlywed couple, they haven't had sex due to their busy schedules. Satoshi in turn asks Hinata, who reveals she doesn't have a boyfriend but has a... lover. Whenever she feels lonely, Hinata looks for a new lover. According to her, a lover is like a friend, not considered cheating, so why can't they be lovers? Convinced by her arguments as well as her sensual body, Satoshi agrees to be her lover. And so, they make love all night long, fulfilling all the sexual desires that he has accumulated for so long!