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...
You're not deciding how to move
after observing your opponent's moves.
إنّك لا تقرّر كيف تتحرّك 
.بعد ملاحظتك لحركات خصمك
No decides cómo actuar
según los movimientos del oponente.
No te mueves analizando
los movimientos del rival.
Tu n’analyses pas
les mouvements de ton adversaire.
Você não está decidindo como se mover 
depois de observar a movimentação do adversário.
Оцените манёвр противника,
а там уж действуйте!