Board Thread:Versus Debates/@comment-30323490-20180607192958/@comment-9782468-20180725162322

Minato never actually figured out the mechanics behind Kamui. All he knew was that in order to hit Minato, logically Obito had to be tangible. So Minato had to hit him precisely when Obito thought he won, in order to get a hit before Obito's considerable reflexes saved him by activating Kamui.

He found a counter that worked with his speed. He didn't know how Kamui worked.