A senior is tricked by a junior into being used for sex by a group of men. He is okay with this because he thought that the junior was coerced into tricking him. However, the junior is actually the mastermind of the event and it is revealed that a video was taken of the entire event and the senior (I think his name is Kabuto) gets blackmailed. I believe an enema is also involved. If anyone can help I'll be grateful!! 🙂

Ok I found it lol. It's called Trap