No One Can Call Me a Psychopath～Wouldn’t I Not Be a Psychopath if I Wipe Out All the People Who Called Me One?～ Chapter -- Discussion

The MC can be brutal but isn't crazy. As an adventurer he does what is required to survive but it does look quite bad to others because he's unbothered by using violent gory methods. However, as long as other ppl leave him alone he leaves them alone. I rather enjoyed the story, it's not too long and manages to entertain quite well.