
Hello Monster
Created by Kwon Ki-young
On KBS2
A tense psychological mystery built on the reunion of two damaged people with shared history, hunting a serial killer through layers of hidden identity and moral ambiguity.
A top detective is reunited with a childhood friend who has since become a leading criminal profiler. Can they join forces to stop a serial killer?
Clusters
Where to watch
- AdsRakuten Viki
Questions people ask
Is Hello Monster one of a kind? No. Less singular than 97% of series.
Is Hello Monster scary? Yes, very. More frightening than 93% of series.
Is Hello Monster violent? Yes. More violent than 81% of series.
Is Hello Monster sad? Yes. More sad than 79% of series.
Does Hello Monster leave you hopeful? Not especially. Less hopeful than 73% of series.
Is Hello Monster easy watching? Not especially. Less comforting than 70% of series.
These describe how the series comes across across its whole run, compared with other well-known series. They are not a content list — nothing here was counted or checked episode by episode, so for age-suitability or specific content use a classification board or a dedicated content-warning service.
Cinnamon Score
How much this series gives you that nothing else will, and whether it delivers.
You have seen this shape before.
How unlike any other series this one feels
How much more it delivers than it promises
How much audiences actually like it
Ensemble












Everything like Hello Monster, and what each one shares →
Like Hello Monster
Nearest across the full emotional profile.
Same Mood as Hello Monster
Nearest on what's most distinctive about this one.
Like Hello Monster, But Darker
Similar, pushed toward heavier and more intense.
Like Hello Monster, But Lighter
Similar, pushed toward warmer and easier.
Like Hello Monster, But Less Popular
Same territory, far fewer people have seen it.

















































