HBAD-336 A younger brother who can't stand being shown off to his older brother's couple, seduced by his sister-in-law Akiko Sasaki

The beautiful and admired sister-in-law was loved by being raped every day by her successful brother. My brother would show off and tell me that only those who strive and succeed can rape a good woman. But one day, in the bathroom, I was seduced by my sister-in-law and made to take out my dick. It seemed like a small act of resistance against my brother. After that, my sister-in-law started demanding my dick, and even my friends' dicks! My admired sister-in-law is changing!