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...
We're having someone look into it,
but it's not clear.
،إنّ هنالك من يبحث فيه
.لكنّه ليس واضحًا
Tja, gute Frage.
Sie wird noch untersucht.
Ahora la están estudiando,
pero no se sabe
Lo están estudiando,
pero no sabemos por qué es.
Quelqu’un étudie son cas
pour essayer de comprendre.
Stanno cercando di capirne di più,
Pedimos para alguém investigar 
para nós, ainda não sabemos.
Ею сейчас занимаются, но пока неясно…