Board Thread:Versus Debates/@comment-5085906-20180725155538/@comment-26107879-20180727103146

@Jason.

It's far from instant. It requires Water Release: Great Exploding Water Colliding Wave to be used. Which means it requires preparation. It also seems Kisame fuses with Samehada which also isn't instant. I'm also sure Katsuyu is perfectly capable of keeping Tsunade safe from her attack. She can break herself apart and cover Tsunade completely if needed.