Minato Namikaze was a genius!
He created a technique of pure chakra, without any seal but one of the most powerful in the manga.
It's also the only one that can be manipulated by all the elments.
I wonder what are like all the element types of Rasengan.
Wind element is Rasenshuriken, but what are katon, suiton, doton, raiton Rasengan like?
And imagine if Pain, who thanks to his ability can manipulate all elements, have learned rasengan. He could mold all chakra types in the rasengan creating the ultimate jutsu.
Please post your opinions.