Responses

I don't think so...? I think it's more of a response due to his gambling addiction. Since he needed to do something to stop his obsession with gambling, that's what he did to relieve the stress/anxiety. But, i think if the story progresses & it shows more of him harming himself because of some stressors, then its possible.
Please ignore (or read if u a bit interested). Using the characters for educational purposes LOL
Heonjae
- intermittent explosive type - Ok mood during normal days but have extreme outbursts when triggered (ch. 20 when he almost killed someone)
- avoidant personality type - does not trust anyone/shy during social situations but wants to make friends (first contact w/ Myeonggi; only have Jingi as friend; fear that myeonggi will hate/avoid him after ch. 20)
Jingi
- actually seems pretty normal. presenting traits might be due to situation (context is important)
Myeonggi
- gambling addiction