beta
Unless his naïveté and his cluelessness is all an act, I'm wondering if Guwon is either some kind of lab experiment or a zombie who somehow regained his human senses... him vomiting after kissing Jinwoo that one time, him not knowing what sex is, him being so clueless about basic moral concepts etc.. His name being Guwon, which literally means "redemption" or "salvation" in Korean, could imply that he was "made" to be a salvation for mankind and given that name as a designation, like some kind of genetically engineered soldier to fight against the zombies, with a side-effect being his strange grasp on morality...
... or maybe I'm just reaching and he's just insane ╮(￣▽￣)╭ Either way I'm here for the ride!