guys I have been wondering this process of transplanting an ms into your own ms to get ems does not make much sense.I mean how will you transplant an eyeball into an eyeball, there need to be space for the eye being transplanted. like obito with rinnegan and kakashi with ms, but madara and sasuke transplanted an eye into their own eye to get ems. I know people will say that happened because of an op medical ninjutsu. buh in this case I don't know how it is possible just saying.obito was able to transplant hands number of time because there was a space for that hand to be transplanted into this makes more sense.