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.
That's why we have to hone
our combat skills in the dark.
.لذلك السّبب علينا صقل مهاراتنا القتاليّة في الظّلام
Darum müssen wir unsere Kampftechniken
auch in der Dunkelheit meistern!
Por eso debemos pulir nuestras
habilidades de combate nocturno.
Por eso tenemos que pulir
nuestro combate en la oscuridad.
Vous devez parfaire vos techniques
dans l’obscurité.
Ecco perché dobbiamo essere abili 
negli scontri nel buio più totale.
Por isso temos que melhorar nossas 
habilidades de combate durante a noite.
Поэтому навык ночного боя
должен быть отточен до предела.