Lumberjack the Monster

Character involves a male lead who is try to get his dream job, a mangaka.
After walking around finding inspiration for a manga he is currently working on. He comes across a terrible murder scene.

This story is similar to Lumberjack the Monster (2023) as the psychopath involves innocent people into their lives and manipulates or inflicts harm or distress upon them.

Both of their plots are very similar. Both involve psychopathic killers and neurosurgery that affects psychopath tendencies.