Naruto is mind-blowingly complex. The franchise is comprised of two anime, a spin-off, a sequel, countless movies, and the original manga, so there's a lot to take in.
Even though one could watch Naruto for hundreds of hours, some fans of the ridiculously popular anime series series aren't satisfied with the official content. These devotees have crafted a whole world of creative Naruto fan theories to help flesh out some of the franchise's finer details.
Perhaps due to the anime's sprawling scale, there are tons of plot holes to fill, and plenty of characters who viewers don't know enough about. Naruto and Naruto Shippuden fan theories range from relatively tame ideas – like the identity of Metal Lee's mom – to the totally shocking assertion that the Infinite Tsukuyomi, a powerful instrument of mass hypnosis, never deactivated.