I just finished it too! At first, the animation kind of bothered me but I liked the character of Kim Chul so I…
It's also bothered me, because it was drawn so frustrating way. Everyone looked so scary ahahah but I'm so curious of the drama. Korean dramas always high-qualified and darker, so it will be so good I think
https://youtu.be/kG3V7lg0wpY
But if you don't want to spoiler the ending for yourself, I'm not recommending to watch it before the drama.