Since Hinata's husband is much older, the two have always considered each other as siblings. Hayato used to come to Hinata's house to eat three times a week. However, Hayato's real intention is not merely to eat with his "brother". He had always had feelings for Hinata, but she didn't realize this. When he inadvertently asked Hayato if he had a girlfriend, Hayato mustered up all the courage to confess to her. Hinata just thinks that Hayato is joking and wants to let this go. A few days later, when Hayato went to get the documents from Hinata, he suddenly attacked her. Although Hinata was resisting, Hayato realized that she was enjoying it immensely. And just as he thought, this was the first time Hinata had lied to her husband. If she told the truth, everything with Hayato would be over, but for some reason she couldn't do it herself. And just like that, she kept letting Hayato fuck her, even Hinata herself took the initiative to find him. Her husband also had doubts, but because Hinata constantly lied and was too trusting of his wife, that 'adulterous couple' continued to cheat right behind his back...
