I got a scumbag when I saw my sister being raped by my mother's new wife.

My stepfather, who was born after my mother remarried, pleaded for discipline, and left my sister completely naked. Is it because I didn't have the courage to help even though I was right next to you? No... I wanted to see my sister being fucked by her even more perverted stepfather! I secretly steal my sister from my stepfather's dick and get a depressed erection, and gradually I turn into a scumbag with a vulgar desire to fuck her too... You want to do it too, right? Lucky insertion and creampie to her younger sister who is reluctant to me after a single word from her stepfather! I was hoping this would happen lol