I was wandering what would happen if Itachi used same technique on Naruto as on Kakashi, where he entered his mind. Naruto has 2 minds Kuuby and his, so will Itachi be able to attack only Naruto or will need to deal with Kuuby too. Not to mention the seal that designed to contain and separate Kuuby’s mind. And same goes for Sasuke as in recent chapters he showed he had low level of that ability. And what will be after effect to Naruto?

Well for my question there as far as i know no clear answer but wild theories are welcomed.