KTDVR-151 - Schoolgirls getting gang-abused in the classroom

The roles are clearly divided between the bully, the henchman, and the victim. The victim gets stripped or touched over her panties, but when the victim isn't around, the henchman is forced to masturbate, and there are even sex scenes involving the bully herself. Sexual bullying isn't the main focus, but it's impressive that all the actresses have firm, beautiful breasts around a D or E cup.