I had a strange thought. In the KH universe a person is made of of 3 parts: Heart, Body, and Soul. I just thought what if the Master of Masters is related to Kingdom Hearts? My theory or whatever you want to call it is that the Heart of the three is obviously Kingdom Hearts itself, The body or physical relation is the Master of Masters and the soul is the X Blade. Essentially the MoM is part of Kingdom Hearts. 

What do you think?

Interesting idea. I don't know all that much about the Master of Masters, so there's not much more I can say here.

This is a very interesting idea.  I actually kind of want to see this happen.  I doubt that it will end up happening, but it would be interesting if it did.

It's interesting, but from what I know nothing has actually told us that MoM is directly related to KH, so while I like it, it's very unlikely.

I just think it would be a cool idea.