Board Thread:Versus Debates/@comment-27233105-20160130092635/@comment-9782468-20160203042238

Just because Tsukuyomi happens in a second, it doesn't mean it can't be broken. The victim's perception of time is altered, so they could break it in what they felt was 30 seconds.

For example. If Kakashi managed to break out of Itachi's Tsukuyomi (I know he isn't able to, but this is an example) in about 36 hours of Tsukuyomi time, he would've just come out of Tsukuyomi in half a second of real time, because the full Tsukuyomi lasts one second of real time.