Board Thread:Theories and Speculation/@comment-27717552-20160513151229

It is said that Minato did teach Kakashi the Rasengan, and respectively, The Chidori was created as Kakashi only applied his lightning release/nature to it. Although unusable before he had the Sharingan, as it creates a tunneling effect to the user's vision, why didn't he just use the Rasengan? He had the ability to use all 5 Basic Elemental Releases, So why didn't he just stick with the Rasengan? 