I have so many things to say and I'll probably do it in another comment but for now... this is a masterpiece. It's funny with lot of drama at same time plus the art and the colours fit so well.
You can even see how the characters became more mature every chapter, taking decisions that not only affect to them, and without losing their original personalities.
The narrative and the anxiety are too real. I also think that staying with hyung was the more rational decision for Sunbin that claims for all the love that Hyunwoo couldn't offer when he needed it. Yet it has a barely open end and I read in some comments that there's gonna be a season 2 so I hope it'll be as great as this one cause I'm already pleased with this end.