If you are immature enough to drop such an awesome manhwa just because you don't like the behaviour of some characters in the early chapters, then it's better if you quit reading mangas and manhwas all together. Just go and watch Doraemon or something if you have no patience.
Dropping this shit!! i HATE when people treat others like that...it ruined the whole thing for me!! Those 5 fucking pricks can get fucked!!