Exactly a man and at that era too, you'll survive bro hell if he's that in love with heesu he can even meet up with him regularly somewhere far away from his house as long as heesu is willing/already addicted to him
His sister run first, so he feels responsible to fill her shoes and their grandma forced him to stay. Maybe he worried that Heesu's family gonna do something to the rest of his family since they are rich, powerful, and well-known around there.
I mean if I were in his shoes I wouldn't even care about the so called family that sells me to be a slave to an evil husband. I won't even care if they be found dead in a ditch they deserve that anyway. He needs to be smart like his sister.
Ain't no way he's not gonna find someone better than Heesu. He looks so beautiful that he can even pretend to be a woman. Heesu seems crazy in the head too. Nothing will come out of it. Heesu will just use him to have revenge on his family. Then when it's all done what if he leaves Saha that will hurt Saha more.
His sister can run the fuck away just why can't he do it too??? AND HE'S A MAN.