Watch Demon Slayer: Kimetsu no Yaiba Infinity Castle Online

The Hashira Training conducted by the Hashira is a special training session that aims to improve all Demon Slayers' abilities and physical health. The training is split between the Hashiras. First, the Sound Hashira, Uzui Tengen conducts training on basic stamina. Then, the Love Hashira, Kanroji Mitsuri handles flexibility training and the Mist Hashira, Muichirou Tokito, deals with the quick movement training. The Snake Hashira, Obanai Iguro, then focuses on sword skill revision, followed up by the Wind Hashira, Sanemi Shinazugawa, who handles pounding training and finally the Rock Hashira, Gyomei Himejima, who trains muscle reinforcement. The Insect Hashira, Shinobu Kocho does not take part in the training. The majority of the Demon Slayers view the training session as an everlasting trip in hell, with the exception of Tanjiro Kamado and Inosuke Hashibira who see the session as a chance to improve themselves. As a general rule, Hashira must take part in each other's training sessions. It is considered a win-win situation for both the Hashira and the Demon Slayers as even the Hashira get to improve due to being constantly attacked by wave upon wave of juniors ranked lower than themselves.

Since ancient times, rumors have abounded of man-eating Demons lurking in the woods. Because of this, the local townsfolk never venture outside at night. Legend has it that a Demon Slayer also roams the night, hunting down these bloodthirsty Demons. For young Tanjiro Kamado, these rumors will soon to become his harsh reality. Ever since the death of his father, Tanjiro has taken it upon himself to support his family. Although their lives may be hardened by tragedy, they've found happiness. But that ephemeral warmth is shattered one day when Tanjiro finds his family slaughtered and the lone survivor, his sister Nezuko Kamado, turned into a Demon. To his surprise, however, Nezuko still shows signs of human emotion and thought. Thus begins Tanjiro's journey to seek out the Demon who killed their family and turn his sister human again.

Tanjiro, Zenitsu, and Inosuke go on their first mission together and venture to Mount Natagumo. Too afraid to go up the "spooky mountain" with Tanjiro and Inosuke, Zenitsu stays behind. Tanjiro and Inosuke encounter a mountain laced with spider webs and controlled by Spider Demons. These Demons have already dispatched countless Demon Slayers, forcing Kagaya to send in the Hashira as reinforcements.

Demon Slayer: Kimetsu no Yaiba -To the Swordsmith Village- is a feature-length cut of Episodes 10 and 11 of the Entertainment District Arc along with the extended Episode 1 of the upcoming Swordsmith Village Arc

It adapts the story from volume 12 (chapter 98 onwards) of the manga series "Demon Slayer: Kimetsu no Yaiba" . The story takes place in a new setting - Tanjiro arrives at the "Swordsmith Village." After the death of Upper Moon Six and Daki, a vacancy appears among the upper moons, and Muzan Kibutsuji summons the remaining upper moons to the Infinity Castle. Muzan is furious about the vacancy and believes that the upper moons should do everything in their power to find the "Blue Spider Lily" and eliminate the Demon Slayer Corps. As a result, Upper Moon Four, Hantengu, and Upper Moon Five, Gyokko, are dispatched to carry out the mission. Meanwhile, Tanjiro, who has been recovering from his injuries at the Butterfly Estate for two months, learns that Kozo Kanamori, the swordsmith, has refused to make him a new sword. Following the advice of the Hashira, Shinobu Kocho, Suma Nakahara, and Kiyo Terauchi, Tanjiro travels to the Swordsmith Village to conUpon arrival, he encounters the Love Hashira, Mitsuri Kanroji, and the Mist Hashira, Muichiro Tokito, as well as Genya Shinazugawa. Tanjiro and his companions are about to embark on a new battle. The opening theme song "Ketsui no Hikari" is performed by MAN WITH A MISSION and milet. The lyrics and composition are by Jean-Ken Johnny, with arrangement by MAN WITH A MISSION and cooperation by Chisato Ichinose. The ending theme song "Koikogare" is also performed by MAN WITH A MISSION and milet.