I got an erection when I saw my childhood friend who helped me being fucked by a bully

Aoi, my childhood friend, has always helped me when I was bullied. But now the bullies have bigger physiques than Aoi... They are defeated and lewd when they try to help them! Now it's my turn to put all my courage into helping! Huh... I'm getting an erection. Even though my benefactor is having sex. ...I want to see more, cry more. Ah...it's the best. I can't help but see Aoi, my beloved, like this... I want to do it too... I'll cum inside my semen... NTR benefactor! A scumbag erection!