Personality. 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 in games!!.Character. On the surface, Chuuya is a temperamental and rather arrogant, blunt man. He revels in fighting, happy to show off his combative ability, and taking great pride I like red wine. My favorite food is rice.