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...
Just like we were able to beat an Upper Rank
demon with the lives that were connected for us,
فمثلما تمكّنّا من هزيمة شيطان من الرّتب 
،العليا بالحيوات الأخرى المرتبطة بنا
So wie wir dank der für uns geknüpften Bindungen
einen Zunehmenden Mond besiegen konnten, ...
Igual que nuestras vidas se unieron
para derrotar al Demonio Creciente,
Otros dieron sus vidas para que
derrotáramos a una Luna Superior.
On a vaincu une lune supérieure
en restant soudés et confiants,
जिस तरह से हमसे जुड़ी ज़िंदगियों के कारण
Il legame che abbiamo creato
Da mesma forma que conseguimos 
derrotar um Lua Superior,
И так же, как цепь других жизней
позволила нам убить молодую луну,