Yamato believes that the assailants were not grave robbers but were after Sora. He decides to appoint Sora to Team Kakashi as a temporary stand-in for the injured Sai.
They go to the trouble of leaving
the Hidden Rain mark...
...وصلوا للحدِّ الذي يتركون فيه علامةَ المطر المخفيّة
Lasciano di proposito il simbolo del Villaggio della Pioggia...