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...
The combat training
should last until nightfall,
،سيستمرّ تدريب القتال حتّى حلول اللّيل
Das Schwerttraining sollte
bis heute Abend dauern.
Su entrenamiento de combate
durará hasta la noche.
Entrenará hasta la noche.
Il devrait s’entraîner
jusqu’à la nuit.
युद्धाभ्यास रात तक चलेगा,
Il suo allenamento durerà 
sicuramente fino a sera.
O treinamento de combate 
deve durar até a noite.
Скорее всего,
он будет сражаться до ночи.