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...
Knowing that those demon bastards
are living it up like lords.
لمعرفتي أنّ أولئك الشّياطين
.الأوغاد يعيشون هنا كأسياد
que los malditos demonios
se crean el señor del castillo.
que los demonios se crean
los señores de un castillo.
Les démons
se prennent pour des seigneurs ?
Não gosto quando os demônios 
ficam se fazendo de lordes.
Поганый демон
возомнил себя знатной особой.