Very harsh, strict, shows no concern for those who do not abide by the Demon Slayer rules, unrealistic, sees the newer Demon Slayer recruits as weak/incapable of improvement, prominent habit of pointing at people with his finger while berating them/talking badly about someone, merciless, traumatized, cares sometimes, self-loathing, gynophobic, incredible sense of determination, and Serpent Hashira.