This is a dojutsu of the highest calibur. It is in relation to Shisui's mind controling doujutsu. This technique requires a special chakra to activate. Only one with the uchiha's blood and the power of the mangenkyou can activate it. Once the jutsu is activated, the user cast's a genjutsu on there enemy. There whole vision has been reversed making every thing the opposite and the whole world as they see it flipped upside down. This also makes the enemy think every thing is moving slow, thus giving the user to strike quickly and accurately. It has also been said to have a second stage, making every genjustsu a reality instead of a illusion. The side affect is that after the technique has been activated, the users chakra is drained. Making timing a very important thing when using it.