Who Is Oh Sangwoo?

Oh Sangwoo is the second main character of Killing Stalking, the primary Antagonist. He is a classmate of Yoon Bum after Bum enrolled college for 4 years and is enlisted in the same military unit as him.

Is Sangwoo a bad guy?

Sangwoo is actually a cruel and ruthless individual who kidnaps, abuses, tortures, rapes and kill people, showing absolutely no mercy to his victims, that, he's totally fine with beating and torturing his victims, even if they're female and/or pleading for their life, not feeling remorse for any of his actions.

Is Sangwoo Yoonbum uncle?

Chapter 45

After a short while, a person's footsteps are heard by Bum followed by Sangwoo telling him to open his eyes. Shockingly, it is revealed that the “present” was his uncle.