JKSManga
You know what I'm ok with Quinn as he currently is. He's more realistic than some MCs. He only seems dumb because he only has limited knowledge of his world, he's a kid and he doesn't know the name of the book is Vampire system. If I was living in a post invasion world and got thrown into this situation I might also be confused. If he stays the same in a few chapters that is the true test of his IQ.