When I found out that my beautiful brother's wife was frustrated, I deliberately masturbated and tested her reaction. As a result... he looked at his dick in a wistful way and inserted it himself.

Shogo ends up living at his older brother and his wife's house for a while to take the university entrance exam. It was a long time since I met Kanako, my brother's wife, for the first time in a while, but the beautiful and homely Kanako was the perfect woman for Shogo. One day, Shogo witnesses her older brother and her husband's nightlife. It seems Kanako is dissatisfied with sex with her brother...When Shogo learns about this, he comes up with a strategy...