Team Kakashi are stunned to learn that Sai's true mission is to kill Sasuke.  Naruto wants to believe that the smile Sai showed them was real, but there is a possibility that it was all an act.
That could never be!
!هذا مستحيل
Das kann doch nicht sein.
¡Imposible!
¡Eso es imposible!
Questa cosa non può essere vera!
Não pode ser!
Такого быть не может!