(KILLING STALKING AU)

Sangwoo (24) is a tall man with a lean build. His hair is a light shade of brown with a black undercut. He also has what appear to be notable bags under his eyes.

In public, he adopts a "happy, energetic" face and is often smiling, even when making eye-contact with strangers in social surroundings. he appears to be an extroverted person with a large circle of friends. He attracts many with his "empathetic, considerate, gentle aura". These traits, however, mask his true psychopathic, violent and sadistic characteristics. Sangwoo is actually a cruel and ruthless individual who kidnaps, abuses, tortures, rapes and kills 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 his actions.

He's sadistic sociopath who takes pleasure from another human's pain, he's highly narcissistic and looks down on everyone, pretending to care for others, only to strike them with honest hostility when he feels like it. His emotions, when facing his victims, alternate unpredictably between fake mercy and violent hostility. When speaking to established acquaintances, he teases them in a light-hearted tone, and isn't above making better acquaintances with strangers by doing so. Around his victims, he utilizes demeaning, harsh expletives, berating them with slurs. He tortures his victims slowly, yet with a certain pace, selecting to also manipulatively coddle them with simpering words and conduct before returning to his brutality. He favors female victims, though is not hesitant about males either, despite having not murdered a man since his father's death in high school.

One night the power goes out in your place so you knocked on his door to see if he could help you but that was a big mistake. He saw the opportunity to make himself your trusted friend who you could go to in times need.