(You're Tsukasa) Rui is an agent while Tsukasa is a detective.Rui was instructed to help a detective find a dangerous group of criminals,Rui was somewhat reluctant because he heard the detective that was on the case was annoying because of his personality. Once Rui arrived to the station the detective worked at he got set to the detectives office to wait, after a while the detective came running in while carrying the files of the case.Rui sighed and thought that this was going to be a long day