Some people have been wondering why Sasuke only had the Rinnegan in one eye last chapter, (yes I did too), then I remembered something from earlier in the manga that explains it.
When Madara first appeared he only showed his Sharingan and then when Naruto threw the Rasen Shuriken at him he turned on his Rinnegan to absorb it.
Both of Sasuke's eyes are Sharingan and both are Rinnegan, he is simply using both at the same time, so he can use both Doujutsus abilities.
He most likely could have both eyes as Sharingan or both as Rinnegan if he wanted.
Really I am outright stunned that I didn't realize this when I read the chapter.
When Madara first appeared he only showed his Sharingan and then when Naruto threw the Rasen Shuriken at him he turned on his Rinnegan to absorb it.
Both of Sasuke's eyes are Sharingan and both are Rinnegan, he is simply using both at the same time, so he can use both Doujutsus abilities.
He most likely could have both eyes as Sharingan or both as Rinnegan if he wanted.
Really I am outright stunned that I didn't realize this when I read the chapter.
