Tanjiro encounters Mist Hashira Muichiro Tokito and Kotetsu, a boy from the village, arguing. Muichiro is demanding that a "certain key" be handed over to him from Kotetsu. Being unable to look on in silence, Tanjiro intervenes to speak on behalf of Kotetsu, however Muichiro refuses to listen. According to Kotetsu, the key is used to operate a battle-type Mechanical Doll, Yoriichi Type Zero, that mimics the movement of a certain real-life swordsman...
someday, for sure,
،فيومًا ما وبكلّ تأكيد
so werden die Bindungen, die wir selbst knoten,
irgendwann Kibutsuji Muzan zu Fall bringen!
se enlazarán con otros para que algún
día ellos puedan derrotar a Kibutsuji.
Nosotros daremos la vida
para que otros derroten a Kibutsuji.
ça servira une génération
पक्का, किसी दिन,
as vidas que continuarem nosso trabalho...
так и наши жизни станут звеньями цепи,
которая приведёт к гибели Кибуцудзи!