10 Best Demon Slayer: Infinity Castle Quotes, Ranked

Please be aware that this article contains spoilers from the Demon Slayer manga! Koyoharu Gotouge’s popular Demon Slayer manga is nearing its end, currently in the exciting Infinity Castle Arc, which is packed with action and heartfelt scenes. This final story arc is split into two parts: the Infinity Castle Arc, and the Sunrise Countdown Arc which concludes the series. The Infinity Castle Arc is the longest in the manga and is being adapted into a three-part film series, with the first film already released to great success. While release dates for the remaining two films haven’t been announced, the manga itself has already finished.

The Infinity Castle arc is widely considered the highlight of the series, packed with intense and emotional scenes. As the epic battle between the Demon Slayer Corps and the demons reaches its climax, the story gives nearly every important character a chance to have a powerful impact through unforgettable moments, meaningful conversations, and revealing glimpses into their pasts. Although the arc is full of memorable lines, the ten quotes below are particularly noteworthy.

10) Makes Me Boil With Anger (Chapter 170)

Gyomei Himejima, alongside Sanemi and Genya Shinazugawa, and Muichiro Tokito, battles Kokushibo, the most powerful of the Upper Rank demons. During the fight, Gyomei unexpectedly activates his Demon Slayer Mark, a feat remarkable because he’s 27 years old – most Demon Slayers don’t survive past 25 after awakening their marks. Kokushibo tries to tempt Gyomei to become a demon himself, but Gyomei, the Stone Hashira, firmly refuses and is furious at the offer.

Whether or not that mark showed up, being a Demon Slayer is dangerous – there’s no promise of surviving another day. I’ve come this far, and I won’t let anything stop me, especially not someone questioning my commitment. That comment was incredibly disrespectful and infuriating.

– Gyomei Himejima

Fighting demons is never simple, and Slayers have always been prepared to sacrifice everything for the sake of others. This is particularly true for the Hashira – the strongest fighters in the Corps, who earned their high rank by accepting the risks involved. Knowing the final battle would be incredibly dangerous, Gyomei, like all the Hashira, was fully committed to doing whatever it took to achieve victory.

9) Things We Have to Do (Chapter 143)

The initial battle of the Infinity Castle Arc pits Shinobu Kocho against Doma, one of the Upper Rank demons, immediately showcasing the intense challenges ahead. While Shinobu wasn’t strong enough to behead a demon, her incredible willpower and expertise in medicine and poisons allowed her to become a Hashira. Even with her skills, she couldn’t defeat an Upper Rank alone. Knowing she was outmatched and injured by Doma’s attack, Shinobu refused to surrender and instead focused on inflicting as much damage to him as possible with her remaining strength.

We’re determined to prevent others from suffering as we have. Even if we’re not strong enough to easily defeat demons, every victory, no matter how small, saves lives – potentially dozens with each demon we defeat. Taking down a powerful Upper Rank demon could save hundreds. It doesn’t matter if we feel capable or not; some things simply must be done.

– Shinobu Kocho

As she delivered the final blow, Shinobu recalled the vow she’d made with her deceased sister, Kanae Kocho. Both sisters had lost their parents to demons and committed themselves to the Demon Slayer Corps, determined to prevent others from experiencing the same grief. Their shared desire to protect people drove them to excel, and the hardships Shinobu later faced only intensified her hatred for demons and her resolve to destroy them.

8) I’m Gonna Send You to Hell (Chapter 160)

It was incredible that Inosuke Hashibira came to Kanao Tsuyuri’s aid during her battle with Doma. He and Shinobu were very close, almost like family, as she always cared for him as an older sister would. So, he was devastated and furious when he found out she had died and vowed to defeat the demon responsible. What he didn’t realize was that the demon had also killed his own mother.

The one who murdered my mother and my friend is standing right here. Thank you for reminding me. Simply beheading you isn’t enough; I’m going to make you suffer in hell.

– Inosuke Hashibira

Inosuke was just a baby when his mother died, but through a series of events, he regained his memories of her and learned about her life. Fueled by rage and a rejection of the afterlife, Inosuke vowed to make Doma suffer before ending his life, essentially creating his own version of hell for the villain. His battle with Doma is considered his greatest moment, as he finally found peace by defeating the demon responsible for the deaths of his mother and the person he considered a brother.

7) Not Even Enough to Kill an Infant (Chapter 171)

Honestly, Kokushibo’s battle is, in my opinion, the absolute peak of the whole series! The guy just radiated power – you could feel how dangerous he was. Even with three Hashira and Genya teaming up, he was a massive threat. It was brutal seeing Muichiro get hurt, but watching Gyomei and Sanemi really push themselves and unleash their strongest moves to take him down was incredible.

You barely damaged my robe – it wasn’t even enough to harm a baby. Once I’ve defeated you both, the rest will be simple.

– Kokushibo

Despite joining forces, they couldn’t even hurt the demon. Kokushibo’s dismissive comment about tearing their clothes is a particularly chilling moment. After that, the battle becomes incredibly fierce, with the demon slayers risking everything to win.

6) The Law of Nature (Chapter 148)

Akaza and Tanjiro were complete opposites, not just in their fighting styles, but also in what they believed. Their fight was a battle of ideas about what it truly means to be strong. Akaza only cared about becoming more powerful and defeating those weaker than him, while Tanjiro always helped others, even going so far as to feel sympathy for demons and recognize their painful pasts.

You might not realize it, but when you were a baby, someone looked after and cared for you. It’s natural for those who are strong to help those who are vulnerable. As they grow stronger, they then help others who need it. That’s just how things work in the world!

– Tanjiro Kamado

Throughout the fight, Akaza tried to defeat Tanjiro by taunting him about Kyojuro Rengoku and arguing that the strong are meant to overpower the weak—that’s just how the world works, he claimed. But Tanjiro disagreed, demonstrating that true strength isn’t about inflicting pain. He believed being strong meant protecting those who are vulnerable, allowing them to become stronger themselves and carry on the cycle of growth.

5) I’m Home (Chapter 157)

Akaza had existed as a demon for over a hundred years, losing the memories of his human life as Hakuji. During the fight, those lost memories began to return, memories that were too painful to hold onto. As he fought, Akaza fully remembered his past, triggered by the feeling of his fiancée trying to stop him. Finally recalling the three most important people in his life, Akaza lost his will to live and destroyed himself.

“I’m home, father. I’m back. Master. Koyuki. I’m home.”

– Akaza

Unlike his family, he wasn’t able to enter heaven, but he desperately wanted them to know he’d finally found peace after a century of searching. Though his master and father ascended to heaven, Koyuki chose to remain with him, even as they were consumed by flames. It’s a deeply sad scene, emphasizing the suffering and sacrifices made by both humans and demons in this troubled world.

4) I’ll Save Him (Chapter 154)

This quote was originally meant to be part of the first book in the Infinity Castle series, but it was cut. During the fight with Akaza, Giyu saw that Tanjiro was unconscious and wouldn’t allow the demon to finish him off. He even taunted Akaza, willingly putting himself in danger to protect Tanjiro. Giyu is generally quiet and reserved, but he deeply cares for others. He eventually came to view Tanjiro as a close friend, almost like family, and was determined to save him no matter what.

I have a duty to share the knowledge I’ve been given. I won’t stand by and watch loved ones perish again. I’m going to save him, just as I was once saved—I’ll save Tanjiro.

– Giyu Tomioka

At that moment, he recalled the promise he’d made to his deceased friend, Sabito: to protect people from demons. Giyu had long regretted the deaths of his sister and Sabito at the hands of demons, and that guilt weighed heavily on him. Because of this, he couldn’t bear to let Tanjiro suffer the same tragic end.

3) You Really Are Hopeless (Chapter 166)

Sanemi initially appears harsh and intimidating, and his first impression isn’t a good one. But despite his aggressive exterior, he deeply cares about others and wants to protect as many people as possible. Like Tanjiro, he’s an older brother who experienced immense loss, having lost almost all of his siblings except for Genya. Tragically, Sanemi was forced to kill his own mother after she became a demon, and Genya survived only because of this act. Following this devastating event, he dedicated himself to the Demon Slayer Corps and distanced himself from his remaining brother.

You’re so naive, brother. I even killed our own mother, all to try and keep you safe. You should have built a normal life for yourself – a home, a family, a peaceful old age.

– Sanemi Shinazugawa

Sanemi pretended to be angry with Genya’s behavior, hoping it would discourage him from becoming a Demon Slayer and lead him to a peaceful, normal life – a life with a home and a family. Sanemi hadn’t been able to experience happiness or old age with his other siblings, but he desperately wanted that for Genya, and secretly vowed to protect him from demons from a distance.

2) Why Were You Even Born? (Chapter 157)

Kanao stunned viewers with both her impressive abilities and her fierce words directed at Doma. This moment, which will be shown in Infinity Castle Part 2, showcases a key part of her personality: her inability to control her rage towards the demon responsible for the deaths of Shinobu and Kanae. Doma, however, genuinely believed he was destined to relieve others of their suffering, though his methods were deeply disturbed.

It’s easy to put on a facade – to act happy, entertained, or even sad – as a way to hide how truly empty you feel inside. You might feel like just a hollow shell, a pointless existence, and question the reason for your life.

– Kanao Tsuyuri

Despite his showy exterior, Doma is actually incapable of feeling genuine emotion. Kanao understood this well, having once shut down her own feelings before learning to open up thanks to Kanae’s kindness. That’s why she wasn’t fooled by Doma’s feigned sadness over Akaza’s death and ultimately challenged him to explain the meaning of his life.

1) I Was Happy (Chapter 179)

Watching Muichiro die was truly heartbreaking, and I think it’s going to be even more impactful when it’s animated. He was incredibly strong, but ultimately couldn’t overcome Kokushibo in their battle. Thankfully, he did manage to wound the demon badly, which gave the others a chance to win. It was incredibly sad to see him reunited with his brother, Yuichiro, in the afterlife, who was devastated by his short life. But what really struck me was that, despite being just fourteen years old, Muichiro didn’t seem to regret his sacrifice – he was actually at peace knowing he’d given his life to protect his friends.

I truly believe we’re all meant to be happy, and I always felt that way myself. It’s hard for me to imagine anyone not having some happy memories. I remember being really happy when my family was all together. Life got tough when I was on my own, and there was a lot of pain, but things turned around when I met some wonderful friends. They helped me find joy again and reminded me how to smile.

– Muichiro Tokito

Once he remembered his past during his battle with Gyokko, he regained his cheerful spirit and felt a stronger connection with his friends. Though his life was short, he felt fulfilled. His final, happiest memory was of being with Tanjiro, Nezuko, the swordsmiths, and everyone else as he peacefully moved on, together with his brother.

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2025-11-08 00:14