I can never get over how dark this story is. And how it doesn't shy from using backgrounds to further it's story. Most manga and manhwa that I've read have been reluctant to use the background of a shot that has something to focus on without giving a zoomed in shot of whatever they were showing. Now this story doesn't do it all the time and it isn't super subtle about it, but combined with the surprising darkness that the story holds, I know I went into this thinking it would be another action story based around korean highschoolers, it shows that it really does have some great draws to it that deserve more attention.
Also hyung is cute. I've seen more than 3 profile pictures of him that I can count of the top of my head.