nah fuck sung-yeon
edit: and comments saying there are reasons and excuses and he gets better, I read the whole thing! he doesn't! he still guilts hosik at ever chance and there is only one time he stops himself from his usual stalking habit and it really just comes off as the reason he didn't is so that hosik doesn't get mad at /him/ again, not about how it makes hosik feel and affects hosik. the only reason he doesn't is cause of the effect it would have on him so it is still coming from a selfish place.
and the people excusing it to be dark fluff, that isn't mentioned in the description! even the cover gives of the impression of being cute wholesome slice-of-life.
Hosik's story