Re: Sasuke's MS doesn't match
Originally Posted by Blizzard589
Sasuke said only those with the double Ms can use the susano. We know normal sharingan upgrades. There is nothing that says MS can't upgrade either (Normal MS being 3 point pattern and double MS being 6 points). Sasuke uses the double Ms.
NarutoBase.net - Naruto Manga Chapter 392 - Page 2
We see dont get to see what itachi's eyes look like when he summons susano, but its apparent u dont need to keep sharingan on to keep susano active, as itachi's eyes are only normal. So its possible he used this 'double ms' to summon his susano without us seeing it.
I think Sasuke got 1 ms from the death of itachi (well madara said he did newayz (Losing itachi, who was close to him)), and other when itachi gave his powers to sasuke.