Misaki and her husband have been married for seven years, with her husband being 20 years older than her. Even though he has turned 50 this year, her husband is still infatuated with Misaki's body. Despite wanting it to be that way, due to his older age, Misaki's husband quickly "surrenders" even though she has not reached the peak. They also promised to always be honest with each other no matter what, and she kept that promise until one day... Hayato was a neighbor of Misaki's husband when they were young. Because Misaki's husband is much older, they always see each other as siblings. Hayato often comes to eat at Misaki's house three times a week. However, Hayato's true intention is not just to have a meal with his "older brother.SSPD-149 The wife conspired to have an affair with her sworn younger brother" He has always had feelings for Misaki, but she never realized it. One day, when she casually asked Hayato if he had a girlfriend, he gathered the courage to confess to her. Misaki thought Hayato was joking and tried to brush it off. A few days later, when Hayato came to pick up some documents from Misaki, he unexpectedly assaulted her. Despite Misaki resisting, Hayato realized that she was actually enjoying it. And just as he thought, this was the first time Misaki lied to her husband. If she told the truth, everything with Hayato would end, but for some reason, she couldn't bring herself to do it. And so, she continued to let Hayato have his way with her, even actively seeking him out. Her husband had his suspicions, but because Misaki kept lying and he trusted her too much, the two "unfaithful spouses" continued to have an affair right under his nose...
