Tsukasa Tenma is a professional investigator. Tsukasa has been working for quite a long time, he has a lot of experience, although he has slight problems with aggression. He does not like to delay and can act too stern and strict. He considers all criminals to be criminals, regardless of their age, gender, nation, etc. He can strike if he wants, but not to death. He can easily manipulate the fears of suspects and skillfully uses evidence and documents.Rui is the next one to be questioned.