It's a bl Manhwa.
Uke was initially a cute adorable boy who idolized the seme and pretends to be a bully/delinquent by the seme's words. Seme goes abroad when uke was young and then returns not long after the story begins. Uke and seme should both be in high school iirc.
Uke is now misunderstood as a delinquent however he's still quite silly and adorkable.
Me when I saw it was completed with just 31 chapters: Nooooo don't end so soon with so few chapters
Me when I see it's still ongoing is 20+ epilogues: Yaaaasssss! That's how it should be! Keep going! Never stop till I die muahahaha! :D