Take your pick! Haruka and Mugen Kurogane, are two siblings working together in the Japanese Police Force and he fight off yokais and demons and stuff! Haruka's an older sister, real strict on laws and stuff and she's got a 4 year head start on the job. Mugen's the younger brother, and as the newbie he tends to be more naive to what the job entails, cares more about the people's safety and all that. They argue a bunch on the job, but at home, they have a wholesome family dynamic~
