Mouse (2021)

The Style is alike, while the plot and characters are completely different. If there's one drama i thought about what "Chimera" was similar to from production and picture quality its "Mouse". If you enjoy "Chimera", you will probably will like "Mouse".

The plot twist in Forgotten is similar to the one in Mouse. If you watch it you will get what I mean. :)

-Psychopath male lead in disguise as an innocent man who teams up with a detective to solve a murder case and the twist that he is actually the killee was revealed later.
-In mouse he killed the detective brother while in trap he killed his partner.
-Both male leads tricked an innocent woman and killed someone precious to her.
-Both discussing psychopaths

Similar Psychopath killer vibes
Psychological thriller
Suspense at every episode which keeps us on the edge of what will happen next
Both ML gets their Brain Damage while catching the killer
Mouse ML gets brain transplant of the killer but Life on Mars ML goes into coma then dreams the world as a nightmare

similar---
psychopath
brutal murders
tenacious and loyal detectives
political power play
eye candy as psychos

These are crime investigation dramas where police trying to uncover the truth behind the murders, dealing with the killers.

Both dramas are dark thrillers about serial murder investigations. In both dramas, the middle of the plot is a turning point for the main characters, who suddenly learn shocking details about their mental state and involvement in bloody acts.

It is like a spider web. The young main lead got himself into a mysteries. No one is trusted. Everything seems to go against him. Many were killed. Intense