read upto chapter 37...i think lee hak is the incestuous child of his father nd older sister...that's why he feels sick looking at his older sis...i think his older sis got abused as child...so she donates to child abuse victims...i think he doesn't want to have a child so he is okay with men....i think he knows this and threatened his dad/gandad to reveal his secret so he's allowed to do anything he wants....and he's been trying to reveal this to the uke to see if he gets accepted but i think the uke is missing this point...
Easy to Notice