As someone with autism - no, he doesn't have autism. Autistic people actually do have interest in a certain thing. Actually an extreme interest. Autism also doesn't equate a lack of empathy and anger issues.
You are completely right; he likely has disorder along the lines of ASPD.
I don't think it's autism spectrum...though I also don't buy "ADHD". He isn't having trouble processing other people's emotions, or seem like he's unable to process so much stimulus around him or anything that really fits. It's hard to diagnose fictional characters, but it could be childhood depression (as in a mood disorder) or simply a child having a hard time in a new family and culture. The fighting seems more like a reaction to having been rejected, and the covering it up with "boys will be boys" (or "children do that" is a cover. The psychologist they took him to is a quack though. The answer to any child's problem is not to just give him whatever he wants.
This is possible--but I think it's too early to tell if he completely lacks sympathy/empathy or if he is acting out because he feels upset and does not want to talk about what is really bothering him. If he was killing live animals, that would have convinced me. A teddy bear is a bit different--children can be rough on toys.
I'm just gonna say this now but.......This feels like fucking Criminal minds episode, you all are just like your own little team of Wonder bread! Like wtf! Lol, sorry but I just wanted to point that little funny out lol
Character strikes me as textbook definition of a sociopath
It's just for fun. :) Like I said, it'd not like fictional characters will match real life.
That may be true, but wouldn't it be awesome to just be like manga world CBA? Lol jk, it's just fun to think about
I think Goong Ha has high functioning autism. His lack of interest in anything and problems eating certain foods, as well as not communicating in school and getting bad grades due to lack of interest can certainly indicate that. It would also explain his attachment to his first love, and why he was so quick to latch onto Sun Hwa.