I think I have a clear conclusion maybe idk but
Won is obsessed with his older brother after he left but think about this I know I would cry if my mom mistake me as someone else but won is trying to keep him to himself and back to:the accident yes his younger brother must have been traumatized after seeing his older have s#x with won and that's how the accident happened maybe and it's really obvious that won is trying to replace him as the dead brother and ruin his social and his friends with others so he can have him for himself plus he could and will be the one who could have spreader those rumors
Won is obsessed with his older brother after he left but think about this I know I would cry if my mom mistake me as someone else but won is trying to keep him to himself and back to:the accident yes his younger brother must have been traumatized after seeing his older have s#x with won and that's how the accident happened maybe and it's really obvious that won is trying to replace him as the dead brother and ruin his social and his friends with others so he can have him for himself plus he could and will be the one who could have spreader those rumors