During the boulder training, Tanjiro is able to move the boulder thanks to Genya's training advice. However, Tanjiro has used all of his power to do so and he is saved by Himejima after he collapses. Himejima, moved by Tanjiro's genuineness, begins to talk to him about his past...
If I relax for even a second,
I'll wilt and then lose ground!
،إن ارتخيتُ ولو لحظة واحدة
!فستخور قواي وأخسر ثباتي
Ein einziger nachlässiger Moment
und ich verliere Kraft und Halt.
Si me distraigo un segundo,
perderé la fuerza.
Si me relajo un segundo,
volverá hacia atrás.
Dès que je me relâche,
je me vide de ma force.
Se perdo la concentrazione, mi crolla addosso 
tutta la stanchezza e non riesco più a spostarlo.
Se eu relaxar por um único instante, vou
 perder a força e não vou conseguir continuar.
ผ่อนแรงลงแค่ชั่วพริบตาก็เหมือนจะดันหินไม่ไป...