Board Thread:Versus Debates/@comment-26005711-20151018173351/@comment-26998824-20151031221138

LoneNinja wrote:

@Ishi Thats complicated. I assume the mirror would have to be in contact with the technique and we don't know how Genjutsu places Chakra into the target. I think its just instantly transported from the user to the target once the requirement is fulfilled. So if the mirror can come in contact with the Chakra from the Genjutsu then sure it could deflect it however still not seeing the mechanics of Genjutsu, i don't think we can say the Mirror deflects Genjutsu.

Reading more into it I think the Yata mirror is the perfect defense against everything and is extremely underrated. The databook description for the Yata mirror (under Susanoo) it that it can nullify any attack "material or spiritual, ninjutsu or physical attacks". The physical and spiritual part was always difficult to understand UNITL NOW. Tobi mentions when fighting Konan that the Basis of Yin power is SPIRITUAL energy and the Basis of Yang power is PHYSICAL energy. Since Gengetsu states that genjutsu is Yin release, Yata mirror should protect against all genjutsu.