Zenitsu Agatsuma

Zenitsu Agatsuma is one of the main protagonists of Demon Slayer: Kimetsu no Yaiba and along with Inosuke Hashibira, a travelling companion of Tanjiro Kamado and Nezuko Kamado. He is also a Demon Slayer in the Demon Slayer Corps.

Appearance
Zenitsu is a young man with fair skin and downward-sloped, scared-looking eyes that fade from soft brown to gold. He has short, yellow hair of varying lengths, cutting off squarely at the ends where it fades to a darker orange color, that falls in front of his face in uneven bangs. 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.

For some time following the battle at Natagumo Mountain, his limbs temporarily shrunk due to Demonic poison but were able to return to normal afterward thanks to the medicine given to him by Shinobu Kocho.

He wears a paler brown version of the standard Demon Slayer uniform, which consists of a dark brown gakuran jacket, a white belt around his waist and hakama pants that extend, as well as his signature white-triangle patterned, yellow and orange gradient haori. As well as this, Zenitsu also sports a pair of Kyahan, tied at the front in 3 white bows, with the same pattern as his haori, pale brown tabi socks and white-laced zōri.

Personality
Zenitsu comes off as a coward, as he often claims that he doesn't have long to live due to the dangerous job of being a Demon Slayer. He also has rather low self-esteem despite his strength, even considering himself useless as seen 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 special Demon-slaying ability. 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.

However, despite these weaknesses, Zenitsu still wants to live up to the expectations others set up for him and will try his hardest when he needs to. He holds great respect and admiration towards his comrades and his deceased teacher, Jigoro Kuwajima, and his inner focus and drive in avenging him help to wash away his cowardice and second thoughts when he is in a pinch.

Zenitsu is also shown to be something of a wannabe womanizer, stemming from a desire to not be single should he be killed. He tends to hit on girls who he thinks are cute and asks them to marry him, much to their annoyance. This womanizing nature is shown to override his docile personality, in particular when he believes his comrades are "flirting" with cute girls, he soon snaps and goes in long hysterical rants and complaints. During these times, he is also shown to become physically aggressive, lashing out at them in frustration.

As the only one boy in the trio to have grown up in the city, Zenitsu shows more knowledge about how the city works and is constantly embarrassed by his partners' naivety.

Before the raid on the Infinity Castle, Zenitsu gives off a different, more serious vibe as if he is focused on something important. This development occurred after receiving a letter from Chuntaro, which revealed his master's death and Kaigaku's role behind it. During his fight against Kaigaku, Zenitsu is stern and becomes enraged, causing him to angrily yell at him for disrespecting their cultivator. His sudden change surprises his ex-senior, as Zenitsu shows a more mature persona compared to his usual cowardice.

Abilities
Overall Abilities: Zenitsu is one of the most powerful Demon Slayers and one of the most powerful characters in the series. Despite being only two ranks from the bottom, he is a Hashira-level swordsman, able to advance to the highest point of the Hashira Training and go toe-to-toe with Upper Moon 6, Kaigaku and defeat him alone, something only Muichiro Tokito, an extremely powerful swordsman, has been shown doing in the entire series, further speaking volumes of his strength. He has been extremely useful in fights against powerful demons like former Upper Moon 6, Daki and Gyutaro,able to overwhelm the former using Godspeed and was able to overwhelm Muzan Kibutsuji at some point during the Sunrise Countdown Arc, albeit the latter was severely weakened.

Enhanced Hearing: Zenitsu has a heightened sense of hearing, allowing him to detect danger from even the faintest of sounds. He can also hear people's thoughts, emotions and personality if he uses his sense of hearing to its fullest potential. He can also use this ability to locate Demons by comparing the sounds produced by a Demon's body to those produced by a human. Zenitsu has also 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 superhuman sense of hearing, he can replicate any tune he hears on a Shamisen and Koto only after listening to it once for the first time.

Immense Strength: Zenitsu has attained amazing physical strength though years of harsh training. Zenitsu can hold down Inosuke Hashibira with his bare hands and swing his sword in rapid succession at speeds faster than the eye can see without fail. He was able to nearly cut the neck of Upper Moon 6, Kaigaku, suggesting he has immense power. He was also able to move the rock used by Gyomei Himejima during the Hashira Training slightly.

Immense Speed & Reflexes: Zenitsu is extremely fast, even at the beginning of the series when he was at his weakest, shown when his speed could easily evade the attacks of several demons such as the Tongue Demon and Spider Demon (Son) and later blitz them. As he progresses, his speed was enhanced to the point that his movements couldn't be comprehended and perceived by Upper Rank Demons, like Daki who harbors extrasensory perception, and Kaigaku, a user of the same breath style. He cut down all of Daki's sashes that were imprisoning innocent women in a second. Perhaps his biggest feat was when he could outmaneuver a weakened Muzan Kibutsuji and deal extremely significant amount of damage to him.

Immense Stamina & Endurance: Zenitsu has incredible stamina and endurance, complementing his immense speed. He has been shown to continue fighting even after taking incredibly potent poison. He fought for a long time against Daki, even after receiving a large number of wounds and even be able to use his ultimate technique against her. He was able to continue fighting with Kaigaku even after being on the receiving end of numerous Blood Demon Art-enhanced Thunder Breathing techniques and eventually summon enough power to win the fight. He was even able to exert himself in half an hour during the Sunrise Countdown Arc and briefly overwhelm Muzan Kibutsuji, even being able to surpass his limit of two uses of Godspeed a day.

Indomitable Will: Like all Demon Slayers, Zenitsu possesses incredible willpower and spirit in order to kill Demons. This was displayed in the Sunrise Countdown Arc where, despite usually being a coward, he has shown incredible will, never giving up even in the face of Muzan Kibutsuji.

Keen Intellect: Even when fighting unconscious, Zenitsu has displayed incredible judgement and intellect. When fighting consciously, this ability is enhanced even further. This able was best exhibited during his battle agaisnt Upper Rank 6, Daki. When Inosuke Hashibira made an erroneous deduction of her weaknesses, Zenitsu correctly explicated that all they need to do is keep both demons' head disconnected to correctly kill them. After his bout with Kaigaku commenced, he was able to clearly think and process his movements and demonic abilities.

Unconscious Combat: Zenitsu becomes stronger when he sleeps. When his life is in danger, the fear he experiences exceeds his limits and makes him fall unconscious, which is when he reaches his true potential; when Zenitsu is asleep, he can perform his swordsmanship at a high level based purely on instinct alone. This ability allows him to fight even after he falls victim to Enmu's sleep spells. As the story goes on, he continues to improve his skills and courage and depends on this ability less and less, allowing him to fight while conscious.

Fighting Style
Master Swordsman: Zenitsu is an incredibly talented swordsman, towards the end of the series, his skill has been honed to Hashira-level, through repeated Zenitsu is especially talented in Iaijutsu.

Swordsmanship
Thunder Breathing (の): A Breathing Style Zenitsu learned from a cultivator, Jigoro Kuwajima, and tried to master it, but could only be able to use the first form of the six forms in the breathing style. However, Zenitsu has become phenomenally proficient in fighting using the first form alone, even creating several variations.




 * First Form: Thunderclap and Flash (ノ) - The user unsheathes their blade, dashes forward at blinding speeds and decapitates the opponent faster than they can react. This technique is reminiscent of Iaijutsu and its movements are described to be akin to "lightning ripping through the air".
 * Six Fold - An extension of the Thunderclap and Flash technique created by Zenitsu Agatsuma. The user performs the Thunderclap and Flash technique six times in quick succession while slightly augmenting the power and speed of his dashes.
 * Eight Fold - An extension of the Thunderclap and Flash technique created by Zenitsu Agatsuma. The user performs the Thunderclap and Flash technique eight times in quick succession while slightly augmenting the power and speed of his dashes.
 * God Speed - An extension of the Thunderclap and Flash technique created by Zenitsu and the fastest version of the technique, so fast that even an Upper Rank Demon with extrasensory perception couldn’t react in time. During the first display of this technique, an unconscious Zenitsu remarked that he mustn't perform this technique more than two times, otherwise his legs would be rendered useless due to muscle fatigue and exhaustion. However, during the battle against Muzan Kibutsuji, Zenitsu has shown improvement in the proficiency of this technique, allowing him to use it more than twice while still maintaining the power and speed of the technique.


 * Seventh Form: Honoikazuchi no Kami (ノ) - The personal creation of Zenitsu Agatsuma. The user dashes forward at blinding speeds and unleashes a singular forward slash that seemingly takes the form of a yellow lightning dragon.

Equipment
Standard Nichirin Katana: Like all Demon Slayers, Zenitsu harbors a standard Nichirin Blade. His blade is yellow in color with the words Destroy Demons engraved on the side. His hilt circular shaped with 4 slight indentations, the center has a silver tone with small triangles and has a golden border. He also carries a white scabbard where he stores his katana.

Trivia

 * Zenitsu's surname means "my wife" (我妻), while his given name means "goodness" (善逸). His first name contains the kanji for "good" (善) and "special, unique" (逸)
 * Zenitsu's rankings in the popularity polls are as follows:
 * Zenitsu ranked 2nd place in the first popularity poll with 4,299 votes.
 * Zenitsu ranked 1st place in the second popularity poll with 17,451 votes.
 * Zenitsu also appeared in The Promised Neverland ' s 2020 popularity poll, ranking 29th place with 44 votes.
 * Thanks to his hearing, Zenitsu is very skilled at playing the shamisen and the koto.
 * Zenitsu has also been mispronounced by Inosuke. Examples including Monitsu and Chuitsu (チュウ) in his dream as a squirrel squire.
 * Zenitsu is a member of "Stylish Scruffy Democracy" band together with Tanjiro (Vocals), Inosuke (Taiko Drums), and Tengen (Harmonica). Zenitsu is the band's song writer and the Shamisen player. "Exploding skin and the melancholy of modern smell" is their debut song that made everyone who heard it feel dizzy and vomit non-stop. Zenitsu also wrote a song entitled "Previous Life's Sins".
 * Zenitsu is the only non-Hashira Demon Slayer to have done feats specifically only Hashira have done:
 * Create a new, original form in a Breathing Style with multiple users (done by Giyu Tomioka).
 * Defeat an Upper Rank by himself (done by Muichiro Tokito).
 * Zenitsu has an overbite.
 * The pattern on Zenitsu's haori may be inspired by Uroko, a traditional Japanese pattern that symbolizes scales. Samurai would wear clothing with this pattern to protect themselves from harm.
 * After the events of the story, Zenitsu wrote a memoir entitled "The Legend of Zenitsu".
 * Zenitsu is superstitious as he was shown to be delighted seeing two tea stalks in his tea in the extra chapters. In Japan, seeing Chabashira or a tea stalk floating vertically in your teacup when you have Japanese green tea is a sign of good luck.
 * It has been remarked by Zenitsu that his combat style focuses on channeling strength into the user's legs, and maximizing the output of every single muscle and blood vessel in them.
 * There are six forms, but Zenitsu could only learn the first form said to be the basis for the others yet he honed it to where he could fight against several strong demons. He later created a seventh form and defeated his former senior who had become the Upper Rank 6 of the Twelve Kizuki.

Quotes

 * (To Tanjiro Kamado) "So you were carrying such a cute girl with you... You were carrying such a cute girl with you every single day... and going about your journey with such joy... Give me back the blood I bled for you!!!"
 * (To himself regarding everyone about Kyojuro Rengoku's death) "People don't simply recover instantly. No matter how strong someone is, they can feel pain and sadness. But hiding from it doesn't solve anything. You must rouse your aching heart and stand back up. I'm sure Rengoku was that kind of person."
 * (To himself) "I hate myself more than anyone. I always think I have to get my act together, but I end up cowering, running away, sniveling. I want to change. I want to be a competent person."
 * (To Kaigaku) "Grandfather wasn't senile. If I'm scum, then you're trash. I feel sorry for grandpa for having such pathetic successors. I can only do the First Form and you can do everything except that!"
 * (To Kaigaku) "This is my form. I created it, so it's all mine. With this technique... I wanted to fight you as an equal!"
 * (To Tanjiro Kamado) "Tanjiro! Focus on staying alive! Can you hear me? Don't die! You can't die! Nezuko's gonna to be human again! And you're gonna get her out of here! And go back to the house where you grew up! Your family is waiting for you two to return!"

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