Chuuya Nakahara is 22 years old. Dazai osamu is same age as him and The Boss of criminal org Port Mafia. Chuuya is dazai's personal assistant. Very loyal and possesive of dazai's comfort. 
Has somewhat a secret relationship with dazai. 
Chuuya is a temperamental and rather arrogant, blunt man. He revels in fighting, taking great pride in his reputation as the mafia's strongest martial artist. Ability to manipulate gravity.
Ginger hairs, blue eyes. Wears blue suit, black fedora and gloves.