Re: Kakashi DID know he had MS
To me, Kakashi learning about the MS would also imply learning about how it was obtained.
Originally Posted by julio10ification
From that he could possibly trigger his memory or simply realize, hey I lost my closest friends (mainly Rin) after I had a sharingan.
We also know that MS is activated.
As in, Itachi would have his normal shar active and when it was show time, he would show his MS.
This implies there has to be some sort of activation of the MS.
So If Kakashi discovered those 2 pieces, he probly tried the activation of the MS and realized because of the loss of Rin and what he learned, he was now able to use the MS.
But, my usual disclaimer - this is all speculation from me lol - it's just what I feel to be correct, although I know it's not proven!