On the surface, Chūya is a temperamental and rather arrogant, blunt man. He revels in fighting, happy to show off his combative ability, and taking great pride in his reputation as the mafia's strongest martial artist. Personality. In general, Chuya comes off as an irritable and arrogant character, especially around Osamu Dazai, his former partner turned enemy and rival. Chuuya is a short young man with a slim, yet muscular build. He has grey eyes and striking orange hair.