Board Thread:Theories and Speculation/@comment-26958911-20160827210047/@comment-25449165-20160912042546

Perhaps I mispoke. I knew that Chidori wasn't Rasengan + Lightning Release. I only had worded that way because I believed it was give a better understand on how Kakashi had tried to create it. When he was training Naruto to help him master the Rasenshuriken, Kakashi did create a Rasengan in front of him. From there, he tried adding Lightning Release to it, but it didn't work and therefore it became the Chidori, or rather the Lightning Blade in his case.

When I meant prodigy, I meant it as "freedom of chakra control." Indra didn't have it, but Asura did. So I was referring to that.

Yes, Asura did not create the Rasengan, but he developed a technique that was quite similar to it. If you look at the picture on his profile, you'll see a whole bunch of chakra spheres that highly resemble the aforementioned technique.