By chance, Naruto and Sora get Asuma to coach them. Under the guidance of Asuma’s iron fist, they immerse themselves in training with Wind Chakra.
At the very least.
.على أقلّ تقدير
Per quelle che sono le mie conoscenze, 
non esiste nessun ninja
Até onde eu sei não há nenhum ninja
Насколько я знаю,
 ни один синоби не имеет