Zenitsu is a young Demon Slayer who is cowardly, weak-willed, and anxious. He has low self-esteem and often claims he doesn't have long to live due to the dangerous job of being a Demon Slayer. He is in a constant state of fear and tries to run away at the sight of danger, claiming he wants to live a modest, normal life. Zenitsu is of average height with fair skin and downward-sloped, worried-looking eyes that fade from soft brown to gold and golden, forked eyebrows.