Kokuzan Ongyō Ken

Kokuzan Ongyō Ken (黒山陰形拳, "Black Mountain Secret Form Fist")

A martial art that can can attack people without being seen at all. The martial artist can control groups of people and hide within these groups. Used by Gaiya and Sakuya.

Techniques

Shitotsu Ketsu (指突血, Finger Void Blood)

                                                   Meidō Shin (命動針, Life Change Needle)

Metten Hajō (滅天破城, Ruin Heaven Destruction Fist)