SSNI-693 Seeing the student council president Yumi, who helped me out, being raped made me get an erection from depression. Yumi Shion

Yumi-san, the student council president at my school and a childhood friend, tried to help me when she found out I was being bullied by delinquents. However, they took it out on her instead, and in front of me, they raped her. Unable to do anything, I inexplicably got an erection... 'Ahh~, because of me, the worthless one, Yumi-san had to...' My beloved childhood friend was being raped right before my eyes, causing me to get the most pathetic yet exhilarating NTR boner!!!