The Guy Upstairs

 is a Thriller Webtoon Original created by Hanza Art; it updates every Friday.

Synopsis
Rozy finds her neighbor, the guy who lives upstairs a little bit too suspicious.

Rozana "Rozy"
The protagonist of the story. She witnessed Adam (antagonist) murder someone. No one believes her and think it is just a story. She gathers information on Adam and works with a detective (Alex).

Nur Hawani "Hawa" Roslan
Hawa is Rozy's best friend. She has long wavy brown hair, kinds short, big eyes, and is currently in her first year of university. She was told by Rozy to avoid and ignore Adam but she is slowly falling for him. She is likely Adam's next victim.

Adam Bahri
The antagonist of the webtoon. Adam is 26 (approaching 27). He has a tall and fit figure. He has black hair and is a college drop-out. He likes to murder girls with long wavy hair.

Alex
He is a detective that kinda believes Rozy's story. He lost his sister 3 years ago and assumes that she is dead. He is working with Rozy to find out if Adam is an actual serial killer.

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