Chuuya Nakahara

Chuuya is a short young man with a slim, yet muscular build. He has grey eyes and striking orange hair that frames his face, with a longer section that falls just past his left shoulder. His trademark look is a black hat with a red hatband and a thin silver chain that hangs over the brim. As a Port Mafia executive, Chuuya wares a white button-up shirt under a dark red vest, a black choker, a black ribbon bolo tie held together with a small silver buckle, an open black cropped jacket with the sleeves rolled up at the elbows, black slacks, a black belt hanging off his right hip and black low-arch shoes. He is almost always seen wearing black gloves. Chuuya also sports a long black coat with light-colored lining and lapels that he wears around his shoulders like a cape. The undercoat is a light shade of red.

In general, Chuya comes off as an irritable and arrogant character, especially around Osamu Dazai, his former partner turned enemy and rival. He frequently smirks while in combat and is the type to criticize his opponents during combat.

He dislikes having to bargain or deal with the enemies and would much rather just fight them. This won't, however, keep him from completing the job. Despite his haughty, short-tempered attitude, he has always put the mission before himself. It is also revealed that Chuuya has some insecurity about his height, when Dazai mocked him about his height telling him that he should drink more milk to get bigger, Chuuya was easily offended and told Dazai that he's still growing. Chuuya is extremely loyal to whatever group he is a part of. As part of Sheep, he was often used as a weapon to win conflicts and went to great length to protect them from the mafia. Even after Dazai manipulated the group into betraying him, Chuuya refused to allow them to die and swore allegiance to the Port Mafia to keep them safe. Later, as a member of the mafia, Chuuya followed his orders no matter what, including those he did not enjoy.When it comes to killing, Chuuya has the same mission-first attitude. He isn't particularly homicidal or overly brutal, but he will happily kill or torture if it's for his mission. He also has at least some sense of morality as shown when he was openly disgusted by Dazai shooting the corpse of one of his victims repeatedly. Chuuya is rarely unnecessarily violent during missions, as he quickly stopped fighting with Yosano and Kenji to negotiate with Fukuzawa, though he can become violent when provoked. He expresses disinterest at fighting those who can’t challenge him but doesn't care too much about who his opponents are if they can provide a challenge as he kicked Kenji into a wall with no hesitation despite the latter being only fourteen.