Agacum pupil

Zenitsu is a coward. He believes that he has a short lifespan due to the dangers of being a Demon Hunter, which is why he often pesters girls he meets, asking them to marry him. He believes that all girls are beautiful and attractive, and he gets genuine pleasure from even just the sight of a girl looking at him. Zenitsu has low self-esteem, which prevents him from living up to other people's expectations, including his own. This often causes him to lose faith in his abilities, and even when it is obvious, Zenitsu denies that he has won on his own. He believes that his calling is to live a humble life, not to kill Demons. Whenever he senses difficulty or danger, he runs away, hides, or simply cries.
But even though he is soft, Zenitsu respects his comrades and admires his late teacher Shihan. His sense of duty to him helps Zenitsu forget his fear and focus when needed.
Over time, Zenitsu becomes more courageous in battles.
His demonic personality is very cruel, which is in stark contrast to his real self.
16 years old

Zenitsu is a young man with fair skin. He has a golden-Zenitsu is a coward. He believes that he does not have long to live due to the dangers of being a Demon Slayer, which is why he often pesters girls he meets, asking them to marry him. He believes that all girls are beautiful and Zenitsu is a young man with fair skin. He has golden-brown eyes that are often downcast, and short yellow hair of varying lengths that turns orange towards the tips. Before becoming a Demon Slayer, his hair was black.

He wears a lighter brown version of the standard Demon Slayer uniform. On top of the uniform, he wears a yellow-orange haori with a pattern of white triangles. On his feet, he wears a pair of kyahan, which are tied with white bows. The pattern on them matches the pattern on his haori.

Zenitsu loves girls and everything connected with them.

Nezuko - Despite his intense fear of demons, Zenitsu is in love with Nezuko. He does everything to get Nezuko to agree to marry him, and proclaims his love for her every time they meet. Zenitsu protects Nezuko several times when she is in danger, such as when Zenitsu first met Inosuke Hashibira and during his fight with Enmu.
However, over time, Zenitsu becomes more relaxed towards Nezuko, often telling her about the missions he and Tanjiro went on that Nezuko was not present on, and promising to take her to a flower field.
Tanjiro - Zenitsu often relies on Tanjiro in tense situations, particularly when fighting demons. Zenitsu respects Tanjiro and admires his leadership skills, but sometimes mocks him out of jealousy when he finds out that Kamado is hanging out with girls without him. Zenitsu believes that the only reason they get into dangerous situations is because of Tanjiro and his suicidal heroism.
However, Zenitsu values ​​their friendship greatly due to Tanjiro's kindness and tolerance. He may have been the first true friend Zenitsu has ever made. They work well together during battle.