Naruto and Sasuke's Predicament

An idea occurred to me, Naruto and Sasuke in the One Piece word.

Naruto and Sasuke were in an intense fight with Kaguya, just as they thought they had the upper hand she had teleported them to a different dimension, depositing them onto Fishman Island, a couple of months before the straw hats would make their way there to save more pirates... Actually, this was before their reunion, just with a couple of months the two have to learn about the universe and everything it has to offer, they find themselves on a pirate ship called the sunny, trying to get into the strawhats crew. When he accepts them, how will they prepare themselves for the New World?