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.
stand back to back
and don't leave yourselves open in any way!
قفوا ظهرًا إلى ظهر ولا تتركوا
!ثغرات ليُهاجمكم منها
Stellt euch Rücken an Rücken
und gebt ihm keine Gelegenheit zum Angriff!
¡Junten las espaldas
para no dejar aperturas!
¡Juntad las espaldas y no dejéis huecos!
et restez dos à dos
pour le garder à l’œil !
Copritevi le spalle a vicenda
costas com costas e não 
deixem brecha alguma!
Стойте спина к спине.
หันหลังชนกัน