Zenitsu is in a constant state of fear and always cries and tries to run away at the sight of danger, claiming he wants to live a modest, normal life, instead of that of a Demon Slayer in which he just thinks he's useless all the time. Kaigaku is known for his arrogance and selfishness, often putting himself first before his fellow demon slayers. They both care about you and are driven to turn you back into a human.