Board Thread:Boruto Discussions/@comment-26389992-20180223153129/@comment-25607614-20180224121519

Thekillman wrote: Kakashi's signature move will always be Chidori. We also haven't really seen him use Purple Lightning outside of the Anime (twice), so calling it his "new signature move" is a bit much.

The book... and I don't know how you would call it anything else when he invented it to replace the signature move that he could no longer use. Of course that really just dodges the question of why it should be in the hands of Boruto, let alone Mitsuki.

It's one of those huge diversions from Naruto, as a series that make it feel bad to me. Nobody even batted an eye that a foreign ninja who's man-momma was once a lethal threat to the village had a former-hokage's jutsu in his repetoire. Imagine if Kabuto had used Rasengan at some point, it'd have been a major plot point.

And sure, it could be attributed to the times changing within the story, but you'd think they'd have then explained that jutsu are just mass-taught. Seems sloppy regardless of you how slice it.