Board Thread:Naruto Discussions/@comment-27550669-20190130125246/@comment-35409024-20190131062242

I don't think he has an MS Genjutsu, lol. You get an ability for each eye. Then if you awakened them both together (unlike in the case of Obito), you can use Susano'o. There hasn't been a case of an Uchiha with Mangekyo having multiple Mangekyo abilities in one eye. If he did, he got it from a Sharingan he implanted.