The Naruto dimension does exist. You say "Wha?" Believe it. Hehe. Anyway, Kishimoto found the anime realm by falling in his toilet one day after being completely wasted before for 8 days straight. He entered the porcelain god's portal, and wahlah! poofed in Naruto's dimension.
So he meandered about for a while, and came upon this village in the middle of nowhere where people wore bizarre impractical clothing, yet still managed to perform superhuman techniques. The villagers snubbed him when he asked them how it was possible and if he was on some sort of weird drugs because they assumed he was drunk (which he was). So, woefully stumbling around, he found a magic door leading straight up the nose of the Third Hokage carved from the mountain and wahlah! poofed into another alternate dimension.
This dimension was the Magical Faerie Happy Go Lucky Land of Lucky Charm Mind Control! There he learned that the Hidden Leaf's children actually did come from storks--stork regurgitation! And the faeries from MFHGLLLCMC were attaching themselves to the children of Hidden Leaf after they had been regurgitated. These faeries had the special ability to control the wardrobe and physical appearance of whoever they attached to, thus the rainbow ninja were born!
And whoever read this thing through, I seriously commend your gumption (hehe, I said gumption...) and wonder why you don't have something better to do. Kinda sad to have this much time, ya know.