Can someone remind me why he's angry at Kim dokja again? Or is it not revealed yet?

Knowing dokja he might have made a trap to bring jh here lol

Maybe bcz he told him ab yoo mia

He's angry at dokja because of ALOT of stuff, but maybe because he used his name etc etc and pretended as him many times. I forgot, it's been a while since I read the novel and my heart can't take doing it again (not yet tho, imma read it again hahaha)