Swamp Release

Emerald Release (エメラルドリリース, Emerarudorirīsu; English TV "Emerald Style") is a advanced nature Kekkei Tōta that combines Earth and Wind to form Emerald that the user can generate from their body or around them. Most techniques of this element are offensive-style, though users have been known to use the emerald to catalyze wounds or stop bleeding.

History
Little is known about this style, as it was apparently developed by the long-vanished Himawarigakure (village hidden in the sunflowers), that was destroyed in the 1st Great Ninja War. For years it was not used by any hands, until Shou Akatsuki began inexplicably using it. According to Shou, the techniques and their seals seem to just appear in his mind.

Trivia

 * The techniques for this style seem genetic, the only current explanation for how Shou can use its techniques without having taught this kind of Jutsu.