be patient. they match eachothers freak. hyunsoo is not a horrible person, he just doesnt know how to manage his emotions and ends up taking them out on others when pushed around. he learns how to cope and feel the more he gets to know youngchan
I think guwon is good, but hes not human, thats why ppl fear him I think he was like, maybe an government experiment, in a attempt to create a soldier to handle the zombies perhaps ( that didnt go Very well) So the teacher is actually 'teaching him how to be human'