In the fight between the demon slayers and the upper moon demons, who dies and who survives in the Infinity Castle arc of Demon Slayer?
Now that the Infinity Castle movie trilogy has been announced, the stakes are higher, as lives will be lost regardless if they are an upper moon, a hashira, or a fan-favorite Demon Slayer character.
Spoiler Warning: This article includes spoilers for the Demon Slayer manga series, so proceed with caution.
Who Dies in Demon Slayer’s Infinity Castle Arc?
With the level of danger each character faces in the Infinity Castle Arc, lives will be lost to ensure the victory of either Muzan or the Demon Slayer Corps.
Here are all the tragic deaths in Demon Slayer’s Infinity Castle Arc, excluding those who died in the Sunrise Countdown Arc based on the manga:
Doma Absorbs Shinobu
Shinobu Kocho finally encounters Doma, the upper moon two, who killed her beloved sister Kanae in the past.
As much as Shinobu wants to behead Doma, she doesn’t have enough strength to do it so she turned to her specialty as her last resort.
Shinobu planned for Doma to absorb him no matter how much pain and suffering it would cause her and her tsuguko, Kanao, to use her poison against him.
Doma successfully absorbs Shinobu after breaking her back, until the only thing left of the insect Hashira is her butterfly-shaped headpiece.
Zenitsu Kills Kaigaku
Who would have known that Zenitsu would kill an upper moon demon by himself?
The death of Jigoro Kuwajima fueled Zenitsu’s motivation to end Kaigaku with a new form of thunder breathing that the latter never imagined the former would be able to master.
In the fight against Kaigaku, Zenitsu unleashed the seventh form of thunder breathing, Flaming Thunder God (Honoikazuchi no Kami in Japanese), to defeat Kaigaku, who failed to harness his new techniques and abilities in time after becoming an upper moon.
Akaza Kills Himself
Giyu and Tanjiro almost killed Akaza in the Infinity Castle with their collective effort to attack and defend together.
It was a crucial fight, with Giyu exhausting all forms of water breathing and Tanjiro being able to see the “Transparent World” to defeat Akaza once and for all.
Despite Akaza’s head decapitated from his body, he still gave Giyu and Tanjiro a hard time until he saw vague memories of his deceased master Keizo and his fiancé Koyuki, who wanted him to stop regenerating and die.
In the end, Akaza decided to kill himself with his technique, pulverizing himself in the process and dying for good.
Shinobu’s Poison Kills Doma
Unbeknownst to Doma, Shinobu’s poison slowly affected his body while fighting against Kanao and Inosuke.
Kanao had anticipated the poison would affect Doma at some point, and true enough, it started to melt Doma’s face. It also snapped one of the demon's arms.
With Kanao and Inosuke’s collective effort to cut Doma’s neck, they succeed in decapitating him until he begins to disintegrate.
It was a pathetic defeat for Doma, who recalled his past as a human and his inability to feel emotion before dying.
Kokushibo, Muichiro, and Genya Die
Kokushibo had to face Genya and three other hashiras in the Infinity Castle.
Despite this, Kokushibo was a force to be reckoned with, as he was able to mutilate Muichiro and Genya’s bodies despite the presence of the stone hashira and the wind hashira.
In the end, the four demon slayers' collective effort wasn't futile, as Kokushibo was defeated albeit at the cost of Muichiro and Genya’s lives.
Muzan Crushes Tamayo’s Skull
Tamayo did everything to reject Muzan and his ambitions. She hid from Muzan for a very long time, trying to concoct a drug that could turn demons back into humans, and she finally succeeded.
However, with Muzan absorbing her arms during the Infinity Castle Arc, there’s no going back to Yushiro and the only way is to face death at the hands of the man who turned her into a demon.
Before dying, Muzan decapitated her head and crushed her skull. Her death was felt by Yushiro, who did everything to help the Demon Slayer Corps against the upper moon demons.
Do Tanjiro and Nezuko Survive?
Yes, Tanjiro and Nezuko survive the Infinity Castle Arc, including the Sunrise Countdown Arc of Demon Slayer, despite everything they have been through against Muzan and the upper demon moons.
In addition to Tanjiro and Nezuko, more characters, including Zenitsu and Inosuke, lived to see another day even after Muzan had been defeated.
Although a lot of lives were lost, many moved forward, carrying on the legacy of the Demon Slayer Corps.
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