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...
This is nothing compared
to their training sessions! Seriously!
!هذا فعلاً لا شيء مقارنة بحصص تداريبهم
Nur dass ihr’s wisst, die aktiven Säulen
nehmen euch noch härter ran! Kein Witz.
El entrenamiento de los otros
será todavía peor, ¿eh?
Entrenar con el resto
será mucho peor, en serio.
Ça, c’est du gâteau comparé
à ce que les piliers leur réservent !
Questo è niente rispetto 
ai prossimi allenamenti!
O treinamento deles não vai ser 
fácil assim. Estou falando sério!
Их тренировки будут куда жёстче!