Ok, here's Kakashi's ultimate tech (and also Sasuke's), the Chidori - Lightning Edge. Please note that I'm no expert when you comment this. I know that some things could've been better, but with a bit practice, they will be. Newayz hope u like it!
no, jiraya learned naruto rasengan, but then naruto made a better rasengan and jiraya called it oddama rasengan... :/ but some ppl say there will be a much better rasengan wich naruto will use in future,,,
why are you changing all the names right away?
Rasengan -> Your better impr rasengan(by naruto its Oddama Rasengan).
Chidori - thoused birds - Your better impr chidori (by kakashi its raikiri-lighting egde.)