Zenitsu Agatsuma’s famous quote: Words that resonate in the heart, becoming stronger while accepting one’s weakness.
Zenitsu Agatsuma, a character from the hugely popular series Demon Slayer: Kimetsu no Yaiba.
When he’s feeling energetic, he keeps saying pitiful things, but in battle scenes he transforms and shows a cool side—his unique personality captivates many fans.
Though usually timid, his words brim with a quiet inner strength that surfaces when it truly matters, striking a chord in our hearts.
In this article, we’ve carefully selected Zenitsu Agatsuma’s most moving quotes from both the original manga and the anime.
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Zenitsu Agatsuma’s Famous Quotes: Words that resonate with a heart that grows stronger while accepting weakness (1–10)
I will protect Nezuko-chan.

In the Mugen Train Arc, when Nezuko was in danger, Zenitsu appeared with Thunderclap and Flash, cut down the demon, and said this line.
Although he was under the demon’s spell and not fully conscious, he sensed Nezuko’s peril and came to help her.
While Zenitsu is often seen as a cowardly character, it seems he shows his true strength when it comes to girls—especially Nezuko.
Also, because he’s stronger when he’s asleep, he was like a completely different person from the guy who had wanted to get off the train earlier! I bet many people’s hearts skipped a beat.
Kick me in the back!!!
These are the words Zenitsu chanted in his heart when he tried to muster his strength.
The person he wished would kick him into action was his master, Jigoro Kuwajima.
Zenitsu was timid and ran away during training, and each time Kuwajima would drag him back by kicking him or rapping him on the head.
From the outside it looked harsh, but Zenitsu adored Kuwajima as someone who would never give up on him, and he even felt affection in being scolded.
That’s why, at the crucial moment, he pictured Kuwajima and wished for him to fire him up.
I’m the one who likes myself the least.
https://www.tiktok.com/@sanemi_0820/video/7468945120818122001At Mount Natagumo, where Lower Rank Five, Rui, lives, Zenitsu ends up fighting the Elder Brother Spider.
However, on his way there he was stung by a spider and poisoned, and when this is pointed out to him, he panics.
He runs away from the spider and ultimately flees up a tree in tears.
While being laughed at by the Elder Brother Spider, Zenitsu says he hates how weak he is and wants to become a decent human being.
It’s the first time he speaks honestly about his true feelings in this line.
And just when it seems like he’ll rally himself and fight… he faints.
Zenitsu Agatsuma’s famous quotes: Words that resonate with a heart that grows stronger while accepting its weaknesses (11–20)
Tanjiro… I… protected it… because you said… this is something… more important than life…
@ms__894 善逸のギャップだいすきт · т ❤︎ ーーーーーーーーーーーーーーーー @♡ 童磨<Խの嫁 ♡ @wkr.xxy_ @🎀 @アニメ•マンガオタク💎🎧 @むぃ @リ ノ @りお @⛓️🖤るみ🖤⛓️@チョコ🍫$¥ @もりもっちゃん🔔︎💕︎︎/🌏💥/💛☺️@さ く ら *.+゚ @フクロウ7世 ーーーーーーーーーーーーーーーー #DemonSlayerTanjiro Kamado#Nezuko KamadoZenitsu AgatsumaZenNezuRisshi Arc (Aspiration Chapter)atmospherePink shadesWaiting for comments#fypRecommendationstretched; extended; grown (long); elongated; (colloquial) running long/over time
♫ Original Song – 🎀 – 🎀
Many people were probably moved by this scene.
After defeating the former Lower Moon demon in the Drum House, Tanjiro steps outside.
There he sees Zenitsu, beaten to a pulp after being kicked by their fellow Demon Slayer, Inosuke.
Noticing that Tanjiro has come out, Zenitsu says this line.
Zenitsu has keen hearing and can distinguish humans from demons by the differences in sound.
So he knew from the start that Tanjiro was traveling with a demon.
However, because Tanjiro had said that the box containing Nezuko was ‘more precious than life,’ Zenitsu put his body on the line to protect it from Inosuke, who had realized Nezuko was inside and tried to cut her down.
I absolutely have to be the one to do this.
These words express Zenitsu’s resolve and tie into the episode of Demon Slayer: Kimetsu no Yaiba – The Movie: Infinity Castle Arc, Chapter 1: Akaza’s Return.
At the time, Zenitsu was training with Tanjiro under the Hashira Gyomei Himejima.
Then a letter arrived.
It likely contained news of their master Kuwajima’s death.
Because one of his disciples had become a demon, Kuwajima took responsibility and committed seppuku.
Tanjiro worried about the downcast Zenitsu, but Zenitsu spoke this line and quietly reflected on what he had to do.
I’m going to speak to Tanjiro myself, so you—stay out of it!!!
https://www.tiktok.com/@kanekikenn070/video/7248219553010830593Here’s a quote that really conveys Zenitsu’s kindness.
He says this line to Inosuke, who is also a Demon Slayer.
Inosuke realized that Nezuko, who was inside the box, was a demon and tried to cut her down.
But Zenitsu protected the box with his own body, and when Inosuke pointed his sword and said she was a demon, Zenitsu shouted these words.
Zenitsu, with his keen hearing, knew that the one inside was a demon, but because he understood Tanjiro’s gentle and warm nature, he sensed there must be a reason and kept quiet.
Even if it hurts or is painful, don’t run away to the easier path.
@user8349661810815 Once you get hooked on an anime, you just can’t stop, right?#DemonSlayerPlease look at me with kind, understanding eyes.clumsy#RecommendedWantToRideCutting corners#Zenitsu
♪ Original song – p – p
While fighting the spiders on Mount Natagumo, Zenitsu is injected with poison and his body grows weaker until he can no longer move.
In that moment, he recalls the words his master—Grandpa—gave him and murmurs, “If I give up, Grandpa will smack me,” as he uses his breathing to try to slow the spread of the poison even a little.
During this battle, Zenitsu remembers many events from his training days.
Seeing this, you can understand Zenitsu’s feelings and what he carries inside.


