Wind of the Fire Sword

The Wind of the Fire Sword (火剣の風, Hiken no Kaze) is a particular variation of the Samurai Sabre Technique used by the samurai from the Land of Iron, created by Yozoraōka in an effort for bloodless battles.

It utilizes her swords ability to store chakra over long periods of time, and then combines this stored chakra with chakra she flows into the blade during the heat of battle. It is considered to be one of, if not the most powerful form of Chakra Flow.

She accumulates chakra of the fire nature inside of Getsushō, until the katana posesses a great enough reserve of that chakra, which is necessary for the technique to be used without exhausting the chakra supply. When Yozoraōka flows her wind chakra into the blade, it works together with the stored chakra; first, flames erupt around it, and then the wind comes forth, taming the flames and condensing them against the blade like another layer of metall, just that this one displays an intense orange glow.

This has multiple effects: for one, the wind strengthens the fire, resulting in a super-heated blade which can easily meld rock and cauterize the wounds inflicted with it; it also dramatically increases the cutting potential of Getsushō, to the point that Yozoraōka boasts that there is nothing she cannot cut.

Trivia

 * This technique is the reason for the moniker Yozoraōka of the Cauterizing Blade (焼灼剣のよぞらおうか, Shōshakuken no Yozoraōka).