Responses
He definitely is. I think Jian has had enough of being a muppet of his mom/family while always being reminded that he is just a half son. Looks like he just wants to live a normal life, but as he can't he escapes reality by having drugs and violent sex with random people and rebels by helping Jitae.
I'm having more and more faith on Jian now, I really hope that he's protecting Jitae from his mom