Muda

is a technique used by Cyan Sung-Sun of the Tres Bestias.

Description
Sung-Sun sheds her skin, which proceeds to expand and envelop a dome-shaped area around her, rendering the space invisible and concealing those within. The technique works through a combination of optic camouflage and a barrier of Reiatsu, to escape the enemy and blocks sensory abilities. Despite Sung-Sun's claim that Muda makes it impossible to detect those hidden by it, Quilge Opie was able to find them regardless.