Crunchyroll has dropped the official trailer of the Infinity Castle Arc of popular anime series Demon Slayer: Kimetsu No Yaiba following the release of the final episode of its fourth season on Sunday.

The Infinity Castle Arc of the manga by Koyoharu Gotouge follows Tanjiro, the Demon Slayer Corps and the seven Hashira being pulled by the demon king Muzan into his lair for a battle. The story covers various fights against the Upper Rank demons, the most powerful demons in existence.

The two-minute-28-second-long trailer takes us through Muzan’s lair, known as the Infinity Castle, while an eerie music adds to the chills. “With a united will that lasts forever, enter the battle at Infinity Castle,” shows a line flashing across the video. We also see all the seven Hashira, Tanjiro and his friends along with snippets from their respective backstories.

Set in Taisho-era Japan, Demon Slayer follows the story of Tanjiro Kamado who returns home one day to find that his family has been killed by demons and his sister Nezuko has been turned into one. He resolves to avenge his family and find a cure for his sister. Soon, he comes across the Demon Slayer Corps and undergoes rigorous training to become a skilled swordsman to protect humanity from the vicious demons.

In the latest instalment, which covered the Hashira Training Arc of the manga, Tanjiro, Inosuke and Zenitsu joined the elite group of demon slayers — known as Hashira — to combat demon king Muzan and restore peace to the world.

Demon Slayer: Kimetsu no Yaiba, created by Koyoharu Gotouge, began as a manga series serialised in Shueisha’s Weekly Shōnen Jump in 2016. The popularity of the manga led to its anime adaptation in 2019. The release of Demon Slayer: Kimetsu no Yaiba the Movie: Mugen Train in 2020 further cemented the show’s global popularity.