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...
I don't know the details, but since they're worried
that more demons might come during the night,
لا أعرف التّفاصيل، لكن بما أنّهم قلقون
،من مجيء المزيد من الشّياطين ليلاً
Ich weiß nur,
dass sie sich fürchten,
Desconozco los detalles, pero quizás los
demonios ataquen de nuevo en la noche,
No tengo muchos detalles,
Ça, je l’ignore,
Non conosco i dettagli,
Eu não sei os detalhes, mas eles estão 
preocupados que mais demônios apareçam durante a noite,
พอดีก็ไม่ได้รู้ละเอียดขนาดนั้น