Shippuga

Shippuga(竜巻牙, Lit. "Hurricane Fang") is a special technique used by Rasetsu, which is fundamentally based off the basic karate open hand strike.

Overview
To perform Shippuga, one must hold a considerably amount of ki, strength, and martial arts skill. Rasetsu has mastered the technique and can perform it with casual ease. By raising his hand over his head in the traditional open handed strike fashion used by Karate Practitioners, Rasetsu then swings his hand down in the general direction of the intended target. From his hand, the force generated is so great that a compressed fang of razor wind is generated and hurled at the opponent, capable of cleanly slicing through solid concrete.