Board Thread:Naruto Discussions/@comment-31338621-20190211020144

How does sharingan see through genjutsu at all? For genjutsu to be cancelled, the genjutsu castor's control of the victims chakra has to be overpowered by stopping the flow of chakra. The victims chakra can't be irregular, we see that this is the same regardless of whether or not the victim has a sharingan, because Karin mentioned Sasuke wasn't in a genjutsu. She figured this out, because Sasuke chakra flow wasn't irregular. 