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...
What you saw in your dream
must've been your ancestor's memory!
لا بدّ أنّ ما رأيته في حلمك 
!كان ذكرى أحد أسلافك
Der Traum, den du hattest, das muss eine
geerbte Erinnerung deiner Vorfahren sein!
Lo que soñaste debió ser un recuerdo
de alguno de tus antepasados.
Seguro que el sueño que tuviste
era el recuerdo de un antepasado.
Ton rêve était certainement
le souvenir d’un ancêtre !
जो तुमने सपने में देखा था,
पक्का वह तुम्हारे पूर्वज की याद होगी!
Il sogno che hai visto
O que você viu no seu sonho deve 
ter sido a memória de um ancestral!
Наверняка тот сон
был воспоминанием вашего предка!