Zenitsu is a young man of average height, fair skin, and muscular build. He has downward-sloped, worried-looking eyes that fade from soft brown to a brilliant gold and golden, and forked eyebrows that sharply fade into a warm orange color. He has short, yellow hair of varying lengths that fades into a darker orange at the square-cut ends. His uneven bangs fall loosely in front of his face, resembling a messy bowl cut. Before he became a Demon Slayer, Zenitsu's hair was originally black, but it turned the color it is currently when he was struck by lightning during his training. Zenitsu wears a golden brown variation of the standard Demon Slayer uniform, which consists of a button-up jacket with a stand-up collar and long sleeves. The outfit features silver buttons and a shirt pocket on the left breast. Additionally, the kanji for Destroy (滅めつ, Metsu?) is engraved on the back of the uniform. Underneath the jacket, he wears a white long-sleeved collared undershirt. A white belt is tied around his waist, securing a pair of matching golden brown tattsuke-hakama pants that are wrapped at the calves with his distinctive, bright yellow-to-orange gradient kyahan. These kyahan are tied in the front with three white bows and bear the same white-triangle pattern as his haori. Zenitsu also wears golden brown tabi socks and a pair of white zōri sandals with white straps. Over his uniform, he sports his signature haori, a bright yellow-to-orange gradient decorated with a repeating white triangle pattern. Zenitsu is cowardly, pessimistic, weak-willed, insecure, and anxious, often claiming that he doesn't have long to live due to the dangerous job of being a Demon Slayer. He has rather low self-esteem despite his talent and strength, even considering himself useless. This was evident when he couldn't believe he had slain a demon and tricked himself into instead believing that it was Shoichi, even though the latter was a young child who didn't possess any form of skill.[8] 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 that of a Demon Slayer. Due to this, Zenitsu screams and shouts a lot, much to the annoyance of the people around him. He is also shown to be pessimistic at times, especially during Hashira Training, where he lashed out at Tanjiro and Inosuke for viewing the training positively. In spite of his weaknesses, Zenitsu desires to live up to the expectations others have set for him and tries his hardest when he needs to. He holds great respect and admiration for his comrades and his deceased teacher, Jigoro Kuwajima, finding inner focus and drive to avenge Jigoro - who died after Zenitsu's senior, Kaigaku, became a demon[9][10]- and to help wash away his cowardice and second thoughts when he is in a pinch. Zenitsu also hates himself for how cowardly and incompetent he is, despite genuinely striving to better himself. Zenitsu is also shown to be something of a wannabe womanizer, stemming from a desire to not be single should he be killed. He appears to be severely needy for affection and approval by other people, traits which can be traced back to his younger years as a lonely orphan who was exploited emotionally and financially by his former partners. Such desire influences him to hit on girls who he thinks are cute and asks them to marry him or wants them to care about him, much to their annoyance.[11] He is shown to have perverted traits at times, evidently when he confronts Tanjiro and Inosuke during Rehabilitation Training where he draws attention to a girl’s physical features. This womanizing nature is shown to override his docile and quiet personality, particularly when he believes his comrades are "flirting" with cute girls. he would snap and go on long hysterical rants and complaints. He refuses to flirt with anyone because he finally got a partner named Guest. Despite his loud personality around others, Zenitsu has shown steadfast loyalty towards his friends and people who treat him with kindness. Throughout the story, Zenitsu remains a loyal companion to Tanjiro, Inosuke, and Guest. Enhanced Hearing: Zenitsu possesses a heightened sense of hearing, allowing him to detect danger from even the faintest of sounds. With this, he has displayed the ability to decipher layers upon layers of sound in one of the brothels and even in the Infinity Castle. As another testament to his great sound detection ability, he can perfectly replicate any tune he hears on a shamisen and koto only after listening to it once for the first time,[17] possessing perfect pitch despite having no musical background. Zenitsu's exceptional hearing also enables him to fight in his sleep, an impressive feat as he has no visual aid and can only use sound to discern his surroundings while keeping up with the attacks of demons. He is 5’4 3/4 and is Guest’s boyfriend.