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...
Serpent Breathing, Third Form...
...تنفّس الثّعابين، الشّكل الثّالث
Schlangenatmung! Dritte Form!
Respiración de la Serpiente,
Tercera Forma,
Respiración de serpiente.
Tercera postura.
Souffle du serpent,
troisième mouvement.
Respirazione del Serpente,
Respiração das Serpentes: Terceira Forma.
Дыхание змеи. Третья ката.