I mean, I can't hate anyone particularly, since everyone has gone through a lot of trauma. Yule doesn't know how to express his feelings well so he does it in a really creepy and toxic way. Dong-hyuk got kind of traumatized when he saw Kung-soo get r-ped and after the many times he suddenly disappeared right in front of his eyes he was scared he would lose him again. Yule's brother (I can't remember his name-) got traumatized by seeing how his brother killed the only person he could feel safe with, aka their mother. And Kyung-soo basically will now have a life-lasting trauma because- uh- you know- I don't have to explain all of what happened to this poor boy. I feel especially bad for him.
Anyway, this is nothing like Love Shuttle (another manhwa written by the same person), and it's more like Killing Stalking and Obey Me. To be honest, I am not really in that kind of genre since I'm a really soft-hearted person("*distant scream of a random person* no one asked!"), yet it still gave me these sad anxiety vibes. The person who made this manhwa basically wanted to get people to hate Yule and some other characters and also to get them to feel bad for Kyung-soo, and they really did accomplish it! :D
As I said before, this is a manhwa for people who also like Killing Stalking, Obey Me and other psychological things. I recommend it for people who like psychological manhwas, and for you, sensitive and empathic people... Read it at your own risk
(Btw now that I think about it the translation was really great)
As long as I understand, he didn’t exactly want to kill his mother. He is just mentally unstable, thus this making him kind of a crazy person. I don’t know why would he push his mother off the stairs, but my cousin would do the same things like hurting others and then not understanding what’s wrong about it. This is just something some people are born with. Psychology is a messed up thing so I can’t really explain what’s going on in their brains when they do such things.



if I had the power and the knowledge to make animations, I'd honestly try to make that into a small anime, but sadly I'm not on the right level to really make such things ╥﹏╥