What is Uzumaki Naruto's strongest move?

Mystery. Nine-tailed Rasengan:

The move used after transforming into the Nine-Tails. Because the Rasengan absorbs the power of the Nine-Tails and turns red, its power is several times more powerful than the ordinary Rasengan.

Super advanced wind release form change? 6? 4 wind release·Rasengan

"Ninjutsu? 6? 4 Rasengan" is a ninjutsu created by adding the change of wind properties. , more destructive. It can be combined with Yamato's Water Release Technique to create the "Feng Shui Release - 6 - 4 Hurricane Water Vortex Technique" that changes its properties.

Ultimate Wind Release form change. Wind Release? 6? 4 Rasen Shuriken:

The completed version of "Wind Release? 6? 4 Rasengan", which is S level or above A super difficult ninjutsu with the most destructive power. An original technique that only belongs to Naruto and requires 3 shadow clones to use. Even the fourth generation Hokage couldn't complete the ultra-advanced ninjutsu, but now Naruto has only completed it to 50, and the duration can only last a few seconds, but the power is far better than the original "Wind Release? 6? 4 Spiral" pill". It can interrupt the meridian system connecting body cells in the body, and even turn chakra into countless tiny wind blades, "attacking the microscopic world on a cellular scale" and destroying every cell. Although it is powerful, this technique also causes great harm to Naruto's body, so Tsunade believes that Naruto should no longer be allowed to use this technique (because the damage caused to the user by using this technique is not considered medical treatment). Ninjutsu cannot remedy it).