Can't Be Put Collars on Witches.

*"Say it. Give me the order. Tell me to cast magic on that man. Just one word. His mind will shatter, but the case will be solved!"* Fantasy Action set in a world where magic - once exclusive to the aristocracy - has become widespread, leading to a sharp increase in crime. In response, the Imperial Kingdom established the Magic Crime Investigation Bureau. One of these detectives is tasked to handle all Witch-related cases. But it's not easy dealing with these charming but dangerous women whose powers can only get restricted by special collars. Women like his wicked Witch partner, the so-called Demon Doll.