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, you'll be able to do
what you can't do now!
ستتمكّن يومًا ما من القيام 
!بما لا تستطيع فعله الآن
Und was du jetzt nicht schaffst,
das schaffst du irgendwann!
Serás capaz de hacer algún día
lo que no puedes hacer ahora.
Aunque ahora no puedas hacer algo,
un día serás capaz.
Tu peines encore,
mais un jour, tu y arriveras !
किसी दिन, तुम वह ज़रूर कर सकोगे,
जो आज नहीं कर पा रहे हो!
Anche se ora non sei capace, 
un giorno ci riuscirai!
Pois o que você não pode fazer agora,
você vai poder fazer um dia.
Однажды ты осилишь то,
что не выходит сейчас.