Board Thread:Theories and Speculation/@comment-33202319-20150622205123/@comment-734582-20150622221459

Davilcancry wrote: kakashi was a genius but he still didnt completely master it. Kakashi mastered Rasengan just fine. He never got past rasengan. Chidori is superior if you're looking to kill, which is what Kakashi did most of the time. Hence he never really used rasengan.

I would like to see Boruto develop his own elemental style Rasengan, since Rasenshuriken is naruto's own special jutsu.