Kokuu no Tsuki

Detective Higa is on a leave of absence investigating Sei Shido, an officer in the Ichikura-gumi gang and a person of interest in a particular case. He goes undercover to ask him for a job, and discovers that despite his intimidating presence, Shido is a beautiful man who oozes wanton sex appeal. After an initial rejection, Higa throws himself in front of an assassin's bullet and earns himself the position of Shido's bodyguard, on one condition: he has to have sex with him...?!