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...
"Persistence prevails when all else fails!"
"!المثابرة سبيل النّجاح"
„Beharrlichkeit siegt!“,
Te espera un entrenamiento largo,
despiadado y de leyenda, ¿sabes?
La perseverancia prevalece.
La constancia es una virtud.
Rien ne sert de courir vite,
la persévérance vient à bout de tout.
जब सब विफल हो, केवल दृढ़ता बची रहती है!
Ci vuole perseveranza prima di tutto!
"Persistência é tudo".
Без работы и печь холодна!
Труд кормит, а лень портит!