Genjutsu tends to affect more senses than just the type it's based around(example: both Tsukuyomi and the Frog Song affect the sense of touch). The Sharingan's ability to see through genjutsu seems to be determined by what sense the genjutsu is based on. They can see through sight based illusions fairly easily while sound seems to be a weak point. Aizen's Shikai affects all the senses but it primarily takes root in sight, since it is based around the opponent seeing his sword.
On the other hand, Aizen's Shikai is pretty much above all other illusions in the HST in terms of detail. With Naruto genjutsu, it's pretty obvious that you're in one. With this is mind, it's pretty likely that his Shikai is > Base Sharingan.
Maybe? Sure, why not?
Originally posted by Nephthys
Aizen's shikai has beaten attempts to see through it I believe. Shinji tried and failed.
Shinji didn't have any abilities to help him, though. No-one in Bleach has a sharingan like power.
And Unohana did notice something was off when examining the dummy Aizen. So it's not flawless.
AuraAngel
On the other hand, Aizen's Shikai is pretty much above all other illusions in the HST in terms of detail. With Naruto genjutsu, it's pretty obvious that you're in one.
It depends a lot on what the illusion is. It's obvious if the person does obvious things like have heads come out of them or trees hold them place, but if it's a subtle thing, it's very hard to notice.
Tsukiyomi affects even more than Aizen's shikai, going for one's sense of time as well, able to make the target feel pain, etc.. Koto can mind control someone without their knowing.
Bleach chapter 171, page 13 of 20; and Naruto chapter 259, page 9 of 19.
While it's true that both genjutsu and Kyōka Suigetsu affect the opponents five senses there's a key difference. The way to break free from a genjutsu is to counter its means of influence, the chakra flow.
Naruto chapter 259, page 10 of 19.
Since Kyōka Suigetsu affect the senses directly—or at the very least other means than chakra flow manipulation—stopping your chakra flow won't prevent its influence.
So no, there's no implication of that they would be able to negate it.
We aren't talking about fighting it with normal anti-genjutsu methods, though, but rather the sharingan, which doesn't use the same technique.
And, Kyōka Suigetsu uses reishi, just like all zanpakuto abilities. So it's using reishi to control senses rather than chakra, not all that different to begin with.
Originally posted by Q99
We aren't talking about fighting it with normal anti-genjutsu methods, though, but rather the sharingan, which doesn't use the same technique.
However, the Sharingan doesn't dispel genjutsu. In chapter 62, Sasuke is able to detect the use of genjutsu with his Sharingan, but he isn't able to dispel it.
Furthermore, no such Sharingan mechanic has been pointed out. The most plausible explanation is that the users are apt at countering genjutsu due to their familiarity with it. Jiraiya did after all—in chapter 259—explain that genjutsu is a very sophisticated use of chakra.
Originally posted by Q99
And, Kyōka Suigetsu uses reishi, just like all zanpakuto abilities. So it's using reishi to control senses rather than chakra, not all that different to begin with.
Everything with a soul has reiatsu—that includes the living as well as abiotic matter—. As opposed to Naruto where chakra is generated by the shinobi, and not every shinobi is able to generate it. Rock Lee, for one, was not able to generate chakra—as explained by Ebisu in chapter 90—.
Sorry. But I have to get ready for class which starts in an hour, so I can't post direct images. But I've referenced the chapters so you should be able to find the information.
Originally posted by AstnerFurthermore, no such Sharingan mechanic has been pointed out. The most plausible explanation is that the users are apt at countering genjutsu due to their familiarity with it. Jiraiya did after all—in chapter 259—explain that genjutsu is a very sophisticated use of chakra.
