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It's not the best out there, but it's definitely in the top ten percent for Naruto x One Piece. I haven't seen many crossovers in those categories that are better... or many One Piece crossovers that are that good at all.
It starts of similar to both manga: idealistic almost to a fault, amusing and even a little heartwarming at times. Then it takes a turn for the darker side as Akatsuki and Sasuke show up.
So give it a whirl. It'll be better than most things you'll find just browsing.
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