AirForce

, Shinkū ha (真空刃) is a Yellow tech used in. After acquiring 19 boss stars, Viper conjures blades out of thin air and directs them at a single foe.

Description
With his weapon, Viper slashes at the air and forms arcs of yellow energy in a bird- or aviation vehicle-pattern. Then, he directs the construct at an enemy, where it collides painfully.

Name Origin
AirForce seems to be a pun of the fact that Viper controls air and uses it as a force or weapon. Additionally, the is a military branch which specialized in aviation warfare and training. Since Viper, himself, is an Acacia Dragoon, this name lends purpose to that as well.