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...
when push comes to shove,
their true nature emerges.
.فعندما يجدّ الجدّ، يظهر معدنهم الحقيقيّ
im Moment höchster Not
offenbart jeder sein wahres Wesen.
pero el verdadero rostro
sale en los peores momentos.
las crisis muestran
su verdadera naturaleza.
finit toujours par révéler
sa vraie nature.
nel momento del pericolo 
mostra la sua vera essenza.
Quando pressionado, sua 
verdadeira natureza aparece.
в беде он покажет своё истинное лицо.
ย่อมเผยธาตุแท้เมื่อยามจนตรอก