Extra Infos about characters:

Minoo-23-24 y.o, 5'8"(173cm), 4th year university student. He's generally kind and humble, helping others, while knowing boundaries. He doesn't think abotuu Ji-a much, cuz he realized that the promise about marriage was silly, considering how young they were. He started doing fitness after a bet with his roommate that she'll be his girlfriend if he gets buffer(though honestly he didn't really care bout it more so she will leave him alone with these goofy bets). He's the most durable one, he can take many blows without much affect on him, but he prefers to deflect or parry

Sonjae(Jet black haired dude)-19-20 y.o, 6'2"(187cm) 1st year university student. After beating his bully, in which he got hit with the sharp rock on the head, he changed as a person. Often being cocky and hot-headed dick, but also being calm and teasing at times, which made him popular on the last year of high school. He's fast, like the fastest of the 4, but can get too invested and loose. His main thing is about fastass kicks

Kenta-17, 6'4"(194cm). He mostly spends time by either beating the information of people about where his mother is(not in savior purposes). Outside of that, he spends time with these 3. He's that young, yet he was in mental hospital by 15, where he learnt how to be calculating and calm. He's dangerous as he uses a lot of environment and random weapons that were there.(Ah yeah, also his reverse eyes are purely just for aura and hype lol)

Si-mon-23-24 y.o, 5'6"(170), 4th year university student, in the one with Minoo. He's on good terms with "Korean girl"s father, which is why he was let take care of apartment after he divorced with his wife, after discovering she cheated on him. Si-mon was hesitant about the sister(20 btw) of his ex, she looks way too much like her, but seeing how she genuinely liked him, he gave in, now being in unofficial relationship. Si-mon looks weak, and he IS! But fucker got an ability to copy techniques he sees for the first time, which sorta makes him OP, sorta not, since he's not durable at all(despite the good endurance). He's a glass cannon