Board Thread:Boruto Discussions/@comment-43689784-20200520151938/@comment-9782468-20200530223418

Lmao Kakashi himself said that the Rasengan is at a level he himself can copy, so idk why you're telling me of all people to do more research.

Besides, your claim is that "it's been established" that the Rasengan can't be copied. That isn't established anywhere as far as I know, and you certainly haven't shown where it's been established.