They didn't gave much attention to ml story its fully focused on fl power and story. Its really sad. Why can't…
Reminder: This drama isn't male-centric. I don't know what they're(screenwriter,director) trying to convey. In the novel, the female lead is the central character.
K-Drama 
https://weibo.com/5844591139/5321964392285142
The ML kept isolating, and he still wouldn't use his demon powers😂. Someone has to die before he'll finally use it.
SML got so much character development and backstory in the later episodes.
I don't know what they're(screenwriter,director) trying to convey. In the novel, the female lead is the central character.
There is
Almost final, Ever since leaving the academy
Happy ending