For some reason, I, a college student, decided to live with my brother and his wife. Mayu, my brother-in-law, asked me to be a surrogate for my husband who has fertility problems, so that we can live together. I'm interested in having sex with Mayu, who secretly desires me, but I seem to be very moody and cold during sex, maybe I have an inferiority complex towards my brother. I objected to such an attitude and attacked Mayu next to my sleeping brother! Mayu-san was pretending not to like, but while killing her voice, she was soaking wet and panting! The violent piston came to Mayu, who felt like nothing she had ever felt before, and poured a spill of seed! After that, when I continued to have physical relations and make love many times, I forgot my original purpose of having children and switched to having sex just to seek pleasure! Suzu Matsuoka challenges a rich NTR story! Enjoy the ultimate extramarital sex without forgetting the seed and falling into pleasure!