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...
For the Hashira, too, since they'll be taking on
an endless stream of Demon Slayer swordsmen,
Los Pilares, por su parte,
tendrán que lidiar con tantos guerreros
Para os Hashira, como eles vão aceitar 
uma infinidade de soldados do esquadrão,