Naruto manages to complete the first step of his training. But the next step, making a rubber ball explode with chakra, proves extremely difficult.
The pain on this arm
that seems to burn…
...الألم الحارق في هذه الذراع
Es schmerzt, als stünden
meine Arme in Flammen.
Siento un dolor abrasador en los brazos.
Noto un dolor abrasador en los brazos.
Sento dolore come se le braccia
 mi stessero bruciando.
Essa sensação de queimado
em meus braços...