Tanjiro's wounds have healed, so he first visits the former Hashira, Uzui, to join the Hashira Training. Tanjiro's joy for the reunion with Uzui is short-lived, however, as he will now undergo basic training to boost his physical stamina.
And if that cuts off
the oxygen to your brain—
—وإن منع ذلك تدفّق الأوكسجين لدماغك
und als mir dann noch
ganz schwindelig wurde …
El oxígeno ya no te llega al cerebro…
Cuando no te llega aire al cerebro…
Et alors que je manquais
d’oxygène…
A quel punto non ti arriva 
più ossigeno al cervello e...
E se corta o oxigênio do seu cérebro...
Голова не варит, в глазах темнеет…