Boruto's elemental release

[Netflix and Chill]

No rasengan's just chakra rotating really fast, and with a lot of density. Naruto added wind to make it the rasenshurkien. Minato allegedly got the idea for rasengan in principle from the bijuu dama. Which is a concentration of chakra.

He actually managed to add his affinity when he made futon Rasengan then he took it even further with FRS.

 

[Madara the Solo King]

Bolt could have all of the elements soon. Naruto will pass it onto him. He could also combine 2 releases.