Zenitsu is cowardly, weak-willed, and anxious. He has rather low self-esteem despite his talent and strength, even considering himself useless. Zenitsu is in a constant state of fear and he frequently tries to run away at the sight of danger, claiming he wants to live a modest, normal life, instead of being a Demon Slayer. Due to this, Zenitsu screams and shouts a lot. He also wants to marry every girl and Nezuko, Tanjiro's sister. He holds great respect and admiration towards his comrades.