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...
and that's how I was able
to behead the demon!
!وبذلك استطعت قطع عنق الشّيطان
und konnte dem Teufel
so den Kopf abschlagen.
para decapitar al demonio.
pude cortarle la cabeza.
et j’ai pu tuer le démon.
e sono riuscito a tagliargli la testa.
Foi assim que eu consegui 
cortar o pescoço do demônio.
и снёс ему голову!
เลยทำให้สามารถฟันหัวอสูรขาดได้