Satoshi had just married Miki, but he didn't have much time for her. There was a meeting coming up, so he had to finish the presentation urgently. Hinata, his colleague and also Miki's best friend, suddenly appears. Seeing that Satoshi wasn't finished, she helped him a little. She also went to get coffee for Satoshi but accidentally spilled it all on him. Unable to go home in this state, Hinata asks Satoshi to come to her house to change her clothes, as she is still keeping her ex-boyfriend's clothes. When she got home, Hinata was dressed in an extremely fabric suit, her nipples were hidden through the thin fabric, making Satoshi's cock quickly stand up. The train has finally departed, and she doesn't know what to do when Hinata asks about him and Miki, and she even asks about their sex. Because they are busy, even though they are husband and wife, the two are not allowed to have sex with each other. Satoshi also asked Hinata again, and she learned that she didn't have a lover, but she had... partner. Every time she is lonely, Hinata goes to find a new partner. According to her, a partner is like a friend, it doesn't count as an affair, so why can't the two be each other's partners? Convinced by Hinata's reasoning as well as her sexy body, Satoshi agrees to be her partner. And so the two of them had sex all night, Satoshi was able to release all the sexual desire he had accumulated for a long time!