[JUQ-253] [Decensored] My Beloved Sister-In-Law Who I Raised As A Parent Was Cuckold By A Worst Friend… Rio Kuriyama

Rio and I are not really brother and sister. Rio was the stepdaughter of my father’s second marriage…. After that, my parents died, and we lived together as siblings. Rio, who was so small, has grown up to be such a beautiful woman. I loved my sister-in-law…. I confessed this forbidden love to my only best friend, Kenichi. But that was a mistake. Kenichi, knowing my feelings, forced me into a relationship with Rio and showed me lewd sex at our house to the point that I almost went insane….