Hashira Training
After a series of mighty clashes with Upper Rank Demons, the Ubuyashiki clan prepares for one last battle with the hellish forces of Muzan Kibutsuji. In order to finally defeat the Demon leader once and for all, the clan devises a training camp for the Demon Slayer Corps, one led by the remaining Hashira - the most elite warriors in the organization. Each Hashira forms a specialized exercise that will hone both their own abilities and the skills of the ordinary soldiers.
Tanjiro Kamado, a boy at the heart of the brewing conflict, recovers from wounds received in a recent fight. While his half-Demon sister Nezuko is studied by researchers like Shinobu Kochou, Tanjiro embarks to train with the Hashira, seeking mastery in each of their assigned areas of expertise to be best prepared for the coming war - skills vital to Tanjiro, as he has vowed to be the very warrior who will eliminate Muzan for good.
01. To Defeat Muzan Kibutsuji
The Hashira, Sanemi and Iguro, along with their comrades head to an abandoned castle on top of a mountain for a mission, while Tanjiro is being treated at the Butterfly Mansion for the wounds he suffered at the Swordsmith Village. Later on, the Hashira gather at the Ubuyashiki Mansion to hold a Hashira meeting, where Muichiro reveals how the marks manifested. In an effort to strengthen the entire Demon Slayer Corps from the bottom up, the Hashira Training begins...
02. Water Hashira Giyu Tomioka's Pain
Kagaya's Kasugai Crow suddenly appears in front of Tamayo and invites her to the Demon Slayer headquarters — even though she is a demon. Meanwhile, after receiving a letter from Kagaya at the Butterfly Mansion, Tanjiro pays a visit to Giyu, who is not participating in the Hashira Training. At first, Tanjiro is rejected by Giyu but patiently continues to try to talk to him. Giyu, who gives in to Tanjiro's persistence, begins to share the reason why he won't participate in the training.
03. Fully Recovered Tanjiro Joins the Hashira Training!!
After talking with Tanjiro, Giyu is able to overcome his past self and decides to join the training. Meanwhile, Tanjiro's wounds have healed enough to join the training, and heads to his first training with the former Hashira, Uzui.
04. To Bring a Smile to One's Face
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...
05. I Even Ate Demons
After completing Mitsuri's training, Tanjiro heads to train with Iguro. When he arrives at the training site, Iguro is waiting for him, visibly angry. Will he be able to complete this horrifying training where he'll have to fix his sword skills?
06. The Strongest of the Demon Slayer Corps
Tanjiro and Zenitsu head to Himejima's training site deep in the mountains and reunite with Inosuke and Murata. Tanjiro first starts the training by being hit by a waterfall but struggles with the coldness and weight of the water.
07. Stone Hashira Gyomei Himejima
Tanjiro was struggling with Himejima's tasks. Now he finally manages to move the boulder after receiving advice from Genya, whom he meets by chance. With this breakthrough, will Tanjiro be able to overcome Himejima's rigorous training?
08. The Hashira Unite
During a silent night when the moon shines, Kagaya finally meets Muzan Kibutsuji, who appears at the Ubuyashiki Mansion.