Board Thread:Theories and Speculation/@comment-28518855-20170711204016/@comment-30168130-20170711212258

well, its a jutsu mostly than a kkg, so it didn't came naturally to him either, like it did with hashirama, or haku and so. he prolly did it like minato made his rasengan: through study and practice. he seems like a smart person from what I can tell (smarter than his mother, since she didn't awaken/ develop it by herself)