Nope ur right they don't have the same vibe but it's the same Dohyun. Maybe because in Omega Complex it's from the viewpoint of YeonWoo who was his sunbae so he was more bratty in that one. But this one it's the view point of his hoobae so he seems more mature? Or maybe the author forgot his character profile lol
In omega complex he was a young freshman and it was from (an older) mc’s perspective so he was like a persistent young brat tryna get his crush that eventually acted as a friend to him, here he’s 4 years older after serving in army, viewed from a stranger/acquaintance/friend perspective so he’s more mature but also he’s dealing with younger people and not particularly tryna be cute with them, but ye it’s still him it’s just he showed different sides of him in different contexts and times of his life
i would be much glad if this was the dohyun from omega complex but they only share a face and name but not really dohyun from omega complex