Satoshi just got married to Miki, but he doesn't have much time for her. He has an upcoming meeting, so he needs to quickly finish his presentation. Hinata, his colleague and also a close friend of Miki, suddenly appears. Seeing that Satoshi hasn't finished, she helps him 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 clothes, as she still has her ex-boyfriend's clothes. When they arrive at her place, Hinata quickly puts on a very revealing outfit, her nipples showing through the thin fabric causing Satoshi to quickly become aroused. 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 busy, the couple hasn't been intimate with each other. Satoshi asks Hinata about her love life, learning she doesn't have a boyfriend but does have a lover. Whenever she feels lonely, Hinata seeks out a new lover. According to her, a lover is like a friend, not considered cheating, so why can't they be lovers? Persuaded by her argument and her seductive body, Satoshi agrees to be her lover. And so, they make love all night, fulfilling all the sexual desires that he has been accumulating for so long!