Maybe chowon has borderline personality disorder?

He can be but I think there's something even deeper

I think that he has many manic episodes, so if we were to diagnose him, it is most likely that he is bipolar. He can also have a simple mental illness and that's all. But if we see it from another perspective, we can also think that he can have a double personality, I say this because of the image in which his evil double appears.

Actually, whatever it is, we can see that it is quite a strong emotional disorder.