DEMON SLAYER: KIMETSU NO YAIBA

Tanjiro learns he upset swordsmith Haganezuka after chipping his sword. He decides to visit the swordsmith village while recovering from the battle with an Upper Rank Demon.

Tanjiro intervenes when Mist Hashira Muichiro Tokito demands a key from Kotetsu, who explains it's for operating Yoriichi Type Zero, a doll mimicking a swordsman.

Yoriichi Type Zero is destroyed after Tanjiro's training, revealing a rusted sword. Kotetsu gives it to Tanjiro, and Haganezuka takes it for a grueling whetting process as demons approach.

Muichiro rescues Kotetsu from a goldfish demon, then heads to save Haganezuka and Kanamori. Meanwhile, Tanjiro battles a demon marked with "Joy."

Mitsuri finds Chief Tecchin gravely injured with defeated guards. Muichiro, guided by Kanamori, heads to the studio, where Upper Five Gyokko waits, and Haganezuka works.

Muichiro is trapped in water by Gyokko's Blood Demon Art. Tanjiro and his team defeat four demons, but they remain intact. Tanjiro senses a fifth demon as Genya attacks.

As Tanjiro prepares to kill the fifth demon, Zohakuten, a demon born of four emotions, attacks. Tanjiro narrowly escapes, enraged by Zohakuten's insults.

With Kotetsu's help, Muichiro escapes Gyokko's Blood Demon Art but is severely injured. As goldfish demons close in, his memories of his family awaken.

Gyokko, enraged by Muichiro's insult, attacks furiously. Muichiro fakes him out again, but Gyokko transforms into his true form, now faster with fish-turning fists.

Mitsuri rescues Tanjiro from a tree dragon, then faces Zohakuten to save Nezuko and Genya. After a fierce battle, she's knocked out but recalls her past and special constitution.

Tanjiro strikes Hantengu after realizing it’s not the main body. As day breaks, Nezuko is exposed to sunlight. He must choose between saving her or defeating the demon.