Believe it! We are lost at Sea (Naruto X One Piece)

This story starts with the Naruto characters from the Gaara retrieval arc and the Strawhat's in Water 7 arc. Shinobi side is Konoha 12 plus Gaara and Kankuro. The story will later also have Obito and some others get involved by getting to the Pirate World. The story isn't serious. It is easy going and not depressing. The battles are not one sided except at the very start. The Naruto characters are what if they had a proper time skip training, so they are stronger than their canon counterparts. Especially Naruto, who is strong as Jiraiya and knows many jutsu. Every character gets screentime here, even Tenten. If you want to follow a fun time and gold battles then this is the story for you.