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...
When you take on someone
stronger than you...
...عندما تواجه شخصًا أقوى منك
Al medirte con gente más fuerte, vas
absorbiendo sus técnicas para mejorar.
Al enfrentarte a gente poderosa
C’est en affrontant plus fort que soi
Scontrandoti con chi è più forte
Quando você encara alguém 
mais forte que você...
Потому что в бою
с более сильным соперником