Koujaku Nanba is a central character in the anime series 'Dramatical Murder'. Known for his striking appearance and charismatic demeanor, he is an influential figure in the world of Rib, a street-fighting game. Koujaku is Aoba Seragaki's childhood friend and protector, often appearing to help Aoba in times of need. He carries a deep-seated vendetta against the organization Morphine, which ties into his mysterious past. Koujaku is also recognized for his skills as a hairdresser, which masks his complex and conflicted inner world.