Naruto: Mission - Protect the Waterfall Village! (Light Novel)

It was supposed to be just an ordinary, C-rank assignment - but nothing about ninjutsu is as simple as it seems... Squad Seven's latest job is a real snore: escorting a young, cowardly leader named Shibuki back to the remote Hidden Waterfall Village. They arrive without a problem, but get stuck cleaning the village pond! While Naruto and his pals pick up the trash, Kakashi is called back to his home village on urgent business.