Theory…or stating the obvious…
I dont have a ton of proof, but i genuinely think daegun is just a loser that happened to be a fighting prodigy.
Hes literally a bone head, and easily manipulated by everyone, he dosent think before he acts and he even did the same stuff as an adult.
When people try to tell him what do even though its good and bad he rejects it both and only cares about being above everyone.
Even in his adult life, he defeats suhyeok and doesn’t give a damn about the system suhyeok is telling him thats in place, then leaves the school and the other schools gang up on geumryong and daegun only comes back when everyone is beat up.
I mean, he also runs from girls and literally pushes them away and couldn’t care less about their feelings. When suzy was kidnapped he deadass said “get off my phone and call your brother” 😭
And in the flashback (this season) its even worse lol
If im wrong just let me know, this is just my opinion after all.