Demon Slayer: Infinity Castle ending REVEALED; Know about the brave warrior who survived the fight against Muzan Kibutsuji?

Demon Slayer: Infinity Castle is a Japanese animated dark fantasy action film, released on 12 September 2025. This film is the first film of the famous anime series Demon Slayer: Kimetsu no Yaiba, which will come in three parts. Three major battles are shown in the film, in which there is a fierce battle between Demon Slayers and a group of dangerous demons Twelve Kizuki. The main character of the story is Tanjiro Kamado, a teenage boy. His family is killed by demons and his younger sister Nezuko is turned into a demon. Tanjiro joins the Demon Slayer Corps to take revenge and make his sister human.

How many battles are there in Demon Slayer: Infinity Castle?

There are three major battles in the film. In the first battle, Tanjiro' and Giyu together fight Upper Moon 3, Akaza. In the second battle, Zenitsu fights his old partner Kaigaku, who has now become Upper Moon 6. In the third battle, Shinobu, the Insect Hashira, takes on Upper Moon 2, Doma. Meanwhile, the children of the Ubuyashiki family, Kiriya, Kuina, and Kanata, search for Muzan. A woman named Tamayo is trying to turn Muzan into a human.

Who dies in Demon Slayer: Infinity Castle?

The most impressive of these battles is the one between Tanjiro and Giyu. Tanjiro uses the Transparent World technique which he learned from his father to dodge Akaza's Compass Needle. During the battle, Akaza remembers his tragic past as a child he stole to help his sick father, but his father committed suicide out of shame. He later trains at a dojo and is about to marry his master's daughter, Koyuki, but an enemy poisons the dojo, killing Koyuki. In a fit of rage, Akaza kills 67 people and is then turned into a demon by Muzan. In the end, tormented by his old memories and guilt, Akaza kills himself.

Who survives Demon Slayer: Infinity Castle's major battle?

While Tanjiro, Giyu and Zenitsu survive, Akaza, Kaigaku and Shinobu die. Shinobu is defeated by Doma's power while fighting him and he absorbs her into his body. At the end of the film, it is revealed that the king of demons, Muzan Kibutsuji, is hidden inside a cocoon (round shell) that is in the heart of the Infinity Castle. However, it is not known where his real whereabouts are as the castle constantly changes its location and path. Now the story will move forward where the remaining Hashiras and Tanjiro will try to find and kill Muzan.