Responses
I think Taesung (the white haired boy) is afraid of Haebom finding out why he said he didn't want to be brothers... He's afraid Haebom will be disgusted or become even more scared of him. I don't think he was aware that Haebom was there too, when he said that. My guess is he hadn't actually planned on Haebom hearing any of that and now he doesn't know how to fix it without making it worse.
There's something annoying me, if your best friend start to live with you because their parents are dead and if you like them but you ignore them for no reason even knowing thy didnt nothing wrong, then let me tell you something: You are a jerk #－.－)
I hope we can see taesun (?) Apologise and be more caring towards the uke (sorry, bad with asian names TT) ASAP.
It kills me to read how the uke suffers, so unfair... he is such a cinnamon roll :(