Board Thread:Versus Debates/@comment-35409024-20180511192505/@comment-32685487-20180517133031

Kakashi did master Kamui, he just didn't have the reserves of chakra to warp giant things. In fact he mastered it so well that by the 4th war he was basically spamming it, until his eye got taken by Madara. Kakashi should have been able to keep the duel Mangekyo from Obito btw.. I think its absolute bullshit how Kishi fucked him over like that.