It is the Taisho Period in Japan. Tanjiro, a kindhearted boy who sells charcoal for a living, finds his family slaughtered by a demon. To make matters worse, his younger sister Nezuko, the sole survivor, has been transformed into a demon herself. Though devastated by this grim reality, Tanjiro resolves to become a “demon slayer” so that he can turn his sister back into a human, and kill the demon that massacred his family.
Season 2
18 episodes Oct 2021 – Feb 2022
Flame Hashira Kyojuro Rengoku receives new orders: Travel to the Mugen Train, where over forty people have gone missing, and conduct an investigation. Leaving the Demon Slayer Corps Headquarters, he sets off on this new mission. Tanjiro's group, fresh from completing their training at the Butterfly Mansion, also head to their next mission, the Mugen Train. There they rendezvous with Rengoku, who arrived ahead of them. On this train running through the darkness, a new battle is about to begin.
Season 3
11 episodes Apr 2023 – Jun 2023
After visiting the Rengoku residence, Tanjirou and his comrades volunteer for a mission within the Entertainment District, a place where desires are sold and demons dwell. They journey alongside the flashy Sound Hashira, Tengen Uzui, in search of a monstrous foe terrorizing the town. Sworn to slay creatures of the night, the hunt continues.
Season 4
8 episodes May 2024 – Jun 2024
Tanjiro’s journey leads him to the Swordsmith Village, where he reunites with two Hashira, members of the Demon Slayer Corps’ highest-ranking swordsmen - Mist Hashira Muichiro Tokito and Love Hashira Mitsuri Kanroji. With the shadows of demons lurking near, a new battle begins for Tanjiro and his comrades.
Amid the wreckage from the buildings destroyed by the destructive attacks of Daki's Belt, Tanjiro awakens. Zenitsu is trapped under the rubble and Inosuke has been impaled by Gyutaro's scythe, while Uzui has lost an arm and his heart has stopped. As Gyutaro taunts Tanjiro by calling him a disgrace, all seems hopeless until...
After completing training with Uzui, Tanjiro visits the Tokito residence next. The Demon Slayer swordsmen who have already started the training are dispirited by Muichiro's intense training and harsh words. Tanjiro hears the swordsmen discussing if there's anything they can do about it...