Who Killed Muzan at the End of Demon Slayer?

Breaking Down Everything that Contributed to the Death of Our Very Own Smooth Criminal, Muzan Kibutsuji!!

Key Takeaways
  • Muzan Kibutsuji's death is a multi-layered event involving Tamayo and Shinobu's anti-demon medicine, weakening by the Demon Slayer Corps, Tanjiro's final dismemberment attack, and finally, the defeat of Muzan's attempt to resurrect through Tanjiro.
  • Despite his immense power as the first demon, Muzan was gradually weakened through strategic planning, concerted attacks by the Demon Slayer Corps, and Tamayo's medical expertise.
  • The climax of the battle saw Muzan attempting to transfer his consciousness into Tanjiro, but ultimately failing due to the interventions of Kanao and Nezuko, who restore Tanjiro's humanity.

Demon Slayer is an anime that you just can’t get enough of. It features some of the most heart-wrenching moments, enough to make a grown man cry. But what sets Demon Slayer apart from many other modern anime is giving us a ruthless and heartless antagonist.

Muzan Kibutsuji is a pure evil entity that is evil for no particular reason with no sympathetic backstory to initiate his villain era! Yeah we know, Muzan Jackson is interesting and that’s why we have a whole blog on his selfish being, check out The Pure Evilness of Muzan Kibutsuji!

But this article is dedicated to answering the question of who killed our smooth criminal at the end of Demon Slayer. To find the answer make sure to read our article till the end so that you don’t miss out on anything!

Muzan Kibutsuji’s Death Explained

Demon Lord | Ufotable

Muzan’s death has multiple layers, and it is not accurate to say that he died after just one battle with the Demon Slayer Corps or due to Tanjiro’s extreme Yorichi-style sword skills. It is important to understand that Muzan had immense power, as he was the first-ever demon. All the demons in the Demon Slayer universe are nothing but his subjects.

To put it simply, Muzan’s death involves nearly four layers. If any one of these layers had been absent, it would have been nearly impossible for the Demon Slayer Corps or Tanjiro to defeat him. No human, except Yorichi, was able to inflict severe damage on Muzan. Therefore, it’s important to understand all the factors or forces that contributed to Muzan’s ultimate demise.

READ MORE: Demon Slayer’s Doma: A Psychopathic Nihilist ➜

1. Tamayo & Shinobu’s Layered Anti-Demon Medicine

Tamayo | Ufotable

Tamayo has been the queen of the show with her exceptional medical abilities and sheer determination to defeat the Demon Lord. The Demon Slayer manga revealed in Chapter 193 that Tamayo anticipated Muzan to be way too strong to be killed by the Demon Slayer Corps combined.

So, she devised a plan to gradually weaken him until his core powers no longer responded to the Demon Slayer Corps’ attacks. In Chapter 193 of the Demon Slayer manga, Tamayo collaborated with Shinobu. Both of these fierce ladies created a layered medicine with the potential to slow down Muzan’s movements and gradually weaken his powers.

It’s sad that Shinobu and Tamayo, despite being extremely important characters in the story, did not participate in the final battle. However, both of them silently and cunningly defeated their enemies without the enemies even realizing it!

2. Muzan Weakened By Demon Slayer Corps in Infinity Castle Arc

Demon Slayer Corps | Ufotable

The second blow to Muzan’s powers occurs in the Infinity Castle Arc. The Demon Lord comes face-to-face with the remaining members of the Demon Slayer Corps. During this arc, the members manage to keep Muzan engaged in battle, leading him to suffer lethal injuries

In Chapter 199 of the manga, Muzan tries to escape the sun, but the strongest Hashira, Himejima, restrains him with chains. However, the sun is not powerful enough to burn him completely, and he manages to break free from the chains.

3. Dismembered By Tanjiro for One Last Time!

Tanjiro | Ufotable

The third layer of attacks that weakened Muzan to death was from Tanjiro and his exceptional sword skills. The moment Muzan is released from Himejima’s chains, Tanjiro strikes his body with his sword. These attacks dismember Muzan.

However, during this, Muzan attempts his final attack on Tanjiro, attempting to absorb him. Later, Tanjiro retaliates, and Muzan, along with his remaining body parts burns in the sun.

4. Blood Consciousness Implantation Defeated by Kanao & Nezuko

Demon Slayer | Ufotable

Besides being extremely powerful, Tanjiro’s sword strikes really hit Muzan at the core of his abilities. However, because Muzan absorbed Tanjiro, he was able to manipulate Tanjiro’s consciousness through his blood. Before completely leaving his body, Muzan attempted to transfer his blood cells and powers to Tanjiro.

This was a move to resurrect himself later in Tanjiro’s form. This plan went really well, and his blood transformed Tanjiro into a demon that was also immune to the sun. However, later in Chapter 202, both Kanao and Nezuko restore Tanjiro’s humanity.

Demon Tanjiro | Ufotable

Tanjiro, portrayed as an extremely kind, humane, and loving protagonist, turns into a deadly demon. However, his sister Nezuko, who serves as his ultimate emotional anchor, and Kanao (his love interest), succeed in bringing him back to humanity.

Muzan, on the other hand, tried his best to stop Tanjiro, as this was his last chance. But Tanjiro sees his fallen comrades and wakes up as a human again. Why not check out what we have to say about Tanjiro? Read Tanjiro Kamado & The Beauty of Altruism to know what makes him unique!

End Note

Demon Lord | Ufotable

Believe it or not, Muzan Kibutsuji is one most the most stylish and best antagonists of the new-gen anime. His death serves as one of the most satisfying experiences that we all eagerly await. We hope this article has satisfied your quest to find out how Demon Jackson died!

But of course, we all know who the real demon is – Doma! You can read more about this rainbow-eyed murderer in Demon Slayer’s Doma: A Psychopathic Nihilist! If you’re interested in more amazing anime series, make sure to check out our anime section.


Zrish Khan

Zrish is a passionate critic in the world of anime, manga/manhwa, and KPop. She offers in-depth insights that illuminate the nuances of these genres with deep analysis. With a keen eye for detail, her reviews take readers on an enlightening journey through both classic and contemporary series.