Hiratsuka Heihachi is loud and impolite but always smiles. He is a strange detective. Unlike Hiratsuka, Saionji Kosuke is the heir of a wealthy family. He is full of justice, naive and honest, almost to a fault.
Saionji Kosuke is then designated to the #1 investigation team, which he has always admired. Unfortunately, his job is to watch over Hiratsuka Heihachi. Up to this point, Hiratsuka Heihachi has been the sole member
