**Season 1:** The story begins with Tanjiro Kamado, who joins the Demon Slayer Corps after his family is murdered, and his sister Nezuko is turned into a demon. He trains rigorously to hone his skills, eventually passing the ‘Final Selection’ to become a demon slayer. During his journey, he befriends Zenitsu and Inosuke, forging a strong bond with them. Tanjiro also encounters Muzan Kibutsuji, the demon responsible for his family’s demise, and faces off against the demon Rui, ultimately defeating him with Nezuko’s help.

**Mugen Train Movie:** Tanjiro, Nezuko, Zenitsu, and Inosuke board the Mugen Train to assist the Flame Hashira Kyojuro Rengoku. They are tasked with eliminating a demon onboard. While Kyojuro successfully defeats two demons, everyone is put to sleep by the demon Enmu. Although Enmu fails to destroy Tanjiro, Kyojuro, Zenitsu and Inosuke’s core, they are later confronted by Upper Rank Three Akaza. In a brutal fight, Kyojuro is fatally wounded.

**Swordsmith Village Arc:** Tanjiro and Nezuko travel to the Swordsmith Village to get his sword repaired. There, they meet the Mist Hashira Muichiro Tokito and Love Hashira Mitsuri Kanroji. During his training, Tanjiro finds a century-old sword. The village is subsequently attacked by the powerful demons Gyokko (Upper Rank 5) and Hantengu (Upper Rank 4). After a grueling battle, Tanjiro, along with the two Hashiras and Genya, manages to defeat the demons. Notably, Nezuko gains the ability to withstand sunlight.

**Hashira Training Arc:** This arc highlights various Hashiras and their abilities. Tanjiro trains with Tengen Uzui (Sound Hashira), Muichiro Tokito (Mist Hashira), Obanai Iguro (Serpent Hashira), and others to increase his strength in anticipation of future battles. Viewers learn more about Kagaya Ubuyashiki, the leader of the Demon Slayer Corps. Tragically, Kagaya and his wife are killed by Muzan, who also traps Tanjiro and others within the Infinity Castle. This sets the stage for the ‘Demon Slayer Infinity Castle Arc’ movie.

The story follows Tanjiro’s journey, marked by his growth, strengthened bonds, and collaborative efforts with fellow Demon Slayer Corps members, including Zenitsu Agatsuma and Inosuke Hashibira. They confront various demons. Along the path, Tanjiro encounters the Hashira, the strongest swordsmen in the Demon Slayer Corps: Flame Hashira Kyojuro Rengoku on the Mugen Train, Sound Hashira Tengen Uzui in the Entertainment District, and Mist Hashira Muichiro Tokito and Love Hashira Mitsuri Kanroji in the Swordsmith Village.

As the Demon Slayer Corps and Hashira undertake a training course, the Hashira Training, to prepare for the battle against demons, Muzan Kibutsuji appears at the Ubuyashiki Mansion. When the leader of the Demon Corps is in danger, Tanjiro and the Hashira rush to the headquarters but are transported to the Infinity Castle by Muzan Kibutsuji. The ensuing battle between the Demon Slayer Corps and the demons is poised to be epic, all set within the Infinity Castle.