Naruto manages to complete the first step of his training. But the next step, making a rubber ball explode with chakra, proves extremely difficult.
Good medicine tends to taste bitter.
الدواء المرّ هو الدواء الناجع
Es wird die bittere Medizin sein,
die ich brauche.
La medicina es amarga.
La medicina es amarga.
Finalmente avrò 
la medicina amara di cui ho bisogno.
Os melhores remédios são
sempre os mais amargos.