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...
I shall pray that the Master
will find the strength...
...سأصلّي ليستعيد المعلّم قوّته
Lasst mich dafür beten,
Rezo por que el fuego de la vida
del comandante
Rezaré por que el fuego
de la vida del patrón
Je prie
pour que la flamme de sa vie
Preghiamo perché la fiamma 
della vita di Ubuyashiki-sama
Rezo para que o mestre encontre forças
Молюсь о том, чтобы пламя души