There are two ships I love in this drama: the ML and his older gangster follower, and ML and the real psychopath. If you’re looking for romance, look elsewhere. The drama has some funny moments and fine acting. Even though the ML thinks he is a psychotic killer, when he actually tries to hurt a person, his innate goodness wouldn’t let him do it. I guess if ML did end up really hurting/killing, the drama would turn into something else, darker, more twisted. Maybe the writers want to convey that you can’t hide your inner self, whether good or bad. Or maybe they don’t want to go down that twisted, dark path. I actually feel sympathetic towards the real killer, especially seeing how he was raised by a crazy controlling father.