Omotenoki: Divine Retribution

"Exploiting an opponents open wound, the user channels the fury of Omotenoki through it directly into their opponents body, destroying them from within."

After dealing an open, bleeding wound on her target, Misumi can utilize the exposed bloodstream to extend the influence of Omotenoki within their body. If successful, she may convert nearly every speck of water within them into the cutting white water of her signature Mangekyo technique, if she isn't stopped or otherwise resisted.

Even if the technique is stopped however the opponent may still suffer potentially crippling, tremendous harm, since due to the sheer force of its pressure even a split second can easily blow off a part of their body or obliterate a whole limb. Needless to say, if not hindered in any way whatsoever, Misumi is more than capable of reducing a grown adult into a pile of bloody, unrecognizable mush.

As one might expect, such great power comes with its downsides. In Seinaru Hōfukus case, the largest one by far is its potentially obscene chakra expenditure, since it functioning relies on her essentially overpowering the opponents chakra for even a moment. While dealing the open wound with Omotenoki makes this a little easier due to her chakra already being nearby, if it was caused by some other instrument such as her sword then the technique becomes even more costly, as the link with her opponents body becomes that much harder to form.

This inherent risk became painfully evident when Misumi and Gitsune faced Maya and her counterpart, Rikkimaru; due to the girl opening several inner gates, she had to "borrow" a great deal of chakra from her fellow swordsman, to be able to force her way through and defeat the duo. Due to the combined eye strain and chakra drain, this left Misumi weakened to the point she couldn't manifest tomoe in her Rinnegan for a good while.