i know that my younger brother's wife, rin, is cheating. but i can't tell my brother that. because i had a relationship with her too... however, feeling bad for my brother, i gradually started refusing rin's invitations. then, her provocative behavior towards me became more intense. she showed me her masturbation, brought in a sex partner while i was there and had sex... i couldn't stand it anymore and ended up having sex with her again. this time, i'm going to have a lot of fun with her. *the recorded content may vary depending on the distribution method.