POOR BABY I WILL PERSONALLY SHOVE JISEONG TO THE DEEPEST DEPTHS OF HELL

MC actually loves the hyung (refer to chapter 2) but decided to push him since the hyungs father discovered their relationship (refer to chapter 16) without telling the hyung the reason. I think the hyung became obsessive because of the MC's action. I am not blaming the MC, he has his own struggles but they lack in communication that ended them where they are.