Misaki and her husband have been married for seven years, and her husband is 20 years older than she is. Even though he is 50 years old this year, he is still infatuated with Misaki's body. Though he wants to, due to his age, Misaki's husband quickly "gives up" even though she hasn't reached her climax. The two have also promised to always be honest with each other about anything, and she has kept that promise until one day... Hayato is her husband's neighbor from when they were young. Because Misaki's husband is much older, the two of them always treat each other like brothers. Hayato often comes to eat at Misaki's house three times a week. However, Hayato's true intention is not just to eat with his "brother." He has always had feelings for Misaki, but she is completely unaware of this. One time, when she accidentally asked Hayato if he had a girlfriend, Hayato gathered all his courage to confess to her. Misaki only thought Hayato was joking and wanted to brush it off. A few days later, when he came to pick up documents from Misaki, Hayato suddenly attacked her. Although Misaki was resisting, Hayato realized that she was enjoying it immensely. And just as he thought, this was the first time Misaki 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 Misaki herself took the initiative to find him. Her husband was also suspicious, but because Misaki kept lying, as well as because he trusted his wife too much, those "prostitutes" kept having an affair right behind his back...
