Board Thread:Versus Debates/@comment-43403813-20190907005521/@comment-43403813-20191001134050

@FlatZone I find referring to novel content a bit iffy due to many contradictions / strange occurrences. For example, Itachi had a genjutsu in the novels that was so powerful, it literally shut the other person's brain down (being Izumi), and yet he did not use this technique in the manga. It's literally so broken. Also, we don't have much to go on surrounding the Ketsurygan's intricacies.

But if we were to accept the Ketsurygan as a point of debate, given the fact that it could place Sasuke under genjutsu, it's safe to say that its one of the most potent genjutsu in the entire series. Most likely more potent than the Sharingan in terms of its genjutsu faculties. No where in the manga does it show the Sharingan to have such a powerful genjutsu effect on the Rinnegan, creating a distinction between the MS and the Ketsurygan.

That being said, it only had 4 chapters of a novel that was exclusively sold in Japan for quite some time to establish a foundation, so there isn't much to go on in comparing it to the sharingan, the Rinnegan or IT.

@Senjutsu Sage The only reason Sasuke manifested the Susanoo was to protect Team 7. He most likely would have been fine if he just stood there, but he couldn't afford to let Naruto get caught up in the genjutsu. He even acknowledged under the Susanoo that if Naruto or himself got caught, "it's all over".

I personally disagree with Tsukuyomi working on a Rinnegan user, but even if it were to work just to be dispelled a few seconds later, how would that give Itachi the edge against Pain? Tsukuyomi is an incredibly taxing technique, so would Itachi even sacrifice that amount of chakra only for a few seconds?