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...
If the demons start running rampant again...
...إن هاج الشّياطين ثانية
Wenn bald wieder mehr Teufel
in Erscheinung treten,
Si ahora los demonios
se vuelven más activos,
Si los demonios se vuelven más activos,
Si les démons
se font encore plus actifs à l’avenir,
Se d'ora in avanti