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...
Even if it's beyond you, maybe your kids
or grandkids might find a way, right?
،حتّى إن كان الأمر يتخطّى قدراتك
.ربّما يجد أطفالك أو أحفادك طريقة ما
Auch wenn dir etwas nicht gelingt, deine
Kinder und Enkel schaffen es vielleicht!
Aunque tú no seas capaz, quizá tus hijos
o tus nietos podrán hacerlo, ¿no?
Aunque tú no puedas,
Ce que tu ne réussis pas,
ta descendance le fera peut-être.
भले ही तुमसे न हो पाए, शायद तुम्हारे बच्चे
या पोते-पोती सफल हो जाएँ, है न?
Se non sarai tu a farlo,
Mesmo que não consiga, talvez 
seus filhos ou netos consigam.
Может, не ты сам, но твой сын
или внук продолжит дело.