Poor boy's likely damaged and never really grew up right 'cause of all his. Mental trauma can change us in many different ways. Being overly child-like and naive is one of those I believe. Tho not so common.
it’s just kinda shocking he lacks any street smarts giving the position he’s in in life. the juxtaposition of his personality vs the life he lives is really strong
Some people just roll into collapse & submit. If your life is shit, you have the option of trying to blend it out or succumb to it and be miserable. Some people become overly optimistic because it's the better, less stressful solution.
Plus, he really IS kinda dumb, so that paired with deciding to see everything positive can make for a really weird combo. XD
One way or another, I think he's more dumb-y-fied for story's sake anyway. It would likely be less weird to see if he was a highschool kid that lived with granny or something. You know, having a doting figure in life that shelters him? Plus, the younger, the dumber. That's also making it less weird than it being portrayed in a college guy.
yeomin kinda dumb but i can’t blame him