Board Thread:Naruto Discussions/@comment-28294008-20160424155402/@comment-734582-20160429083645

AsianReaper wrote: @GreatestSin, we do know 100% sure it's just a Rinnegan. Because if it were different, Madara or anyone else wouldn't have called it a Rinnegan. They'd have called it a Rinnesharingan. But they didn't. Sasuke has a Rinnegan. It's not a rinne sharingan. It's an eye with both Mangekyou and Rinnegan powers in one. It approximates a Rinne Sharingan (again: design and Sasuke's spacetime ninjutsu), because a Rinne Sharingan is simply a highly souped up Sharingan. Sasuke's Sharingan -with the six paths chakra- is a souped up Sharingan, but not so far as to be a Rinne sharingan.

Let me clarify that:

No distinction is made between a dojutsu and a six-paths enhanced dojutsu. E.g. Kakashi mentions that Six Paths chakra enhanced his eye powers significantly, but he still had Mangekyou with no mention of it now being a Six paths Sharingan or whatever.

Sasuke's eye is clearly different from a regular Rinnegan (since it maintained it's Mangekyou powers, unlike Madara's rinnegan), but it's also not so different that it's an entirely new eye either (since it has both Rinnegan and Mangekyou powers). It has a power unique to his Rinnegan, just like Madara had Limbo, and he is forced to close his Rinnegan when overused, signifying even more that amenotejikara is linked to his Rinnegan. Naruto Gaiden however confirmed that his spacetime ninjutsu is linked to his Mangekyo Sharingan, as his Rinnegan is maintained even when his Mangekyou is retracted. So, he gained a power in his eyes neither Rinnegan nor Sharingan can explain on it's own, but it is a power attributed to the Rinne Sharingan.

This suggests that his Spacetime Ninjutsu is an emergent power, perhaps from possessing both Dojutsu at the same time. However, a Mangekyou sharingan can still use Sharingan abilities (and doesn't have to be retracted to use lower powers). A Rinnegan however can not use Sharingan powers (madara needed to use Sharingan for Genjutsu: Sharingan). Sasuke's eye is an eye beyond Rinnegan (as it can use both) yet is not so far beyond it that it's an entirely new eye.

Calling it something different (Sharinnegan for example) is perfectly fine and understandable.