Water that touches electricity will make the electricity go from crazy to nothing. Electricity flows to one direction, when water is added the electricity follows in the water. A cup of water will be fully made into a cup of lightning + water if electricity was added to it. Lightning is hot which I thought it would be but if you arguing the point that water chakra doesn't make water then your point of making lightning chakra being able to destroy water is pointless since it can't make lightning... it's only chakra. The water of the genjutsu is "Real" The storm is "Fake" Your chakra is lightning based to allow you to use lightning jutsus. The water chakra manipulates water to touch you. =/