Okay, I see how we'll get to the first chapter.....

Right, it seemed like he was homeless so he probably moves in with him, something happens, and he leaves and has nowhere to stay

And I think the something that's going to happen involves this creepy hyung. He needs to realize that hyung is weird and needs to be left alone. And he would have to do something DRASTIC for Seo-in to leave him alone

Oof, I feel like ur right

We can only pray