They didn't explicitly state what happened between them, but it was heavily implied that the brother sexually abused him. Remember when he is pulling Ha-woon's shirt open and he says "I never asked your permission for this"? That chapter just confirmed it for me. Eeeugh the brother really gave me the creeps.
Im curious it seems like it happens but it does not show much in the story
Yeah I think so because he gets super nervous and freezes when he gets touched by him, which is probably triggers the trauma from his past
Bro I wanted moreeee!! and I'm wondering if hawoons weird ass brother sexually assulted him when he was younger? Anyone know?