Board Thread:Theories and Speculation/@comment-27717552-20160513151229/@comment-28575329-20160610233632

@Thekillman in what way is it similar to the Rasengan? Because its hand-held? (I addressed this already, its a weak connection) It differs visually, technically and, as people have discussed above, it's different even in strategy (Rasengan is destructive, Chidori is surgical). Most importantly, whether or not Kakashi was somehow influenced conceptually by the rasengan is irrelevant. The point is that they are different technically, making them two distinct, different jutsu.