Spirit Body Fusion

is a technique used by Metastacia.

Description
Metastacia has red tentacles on his back that he can speedily discharge at a target. When the tentacles penetrate the target, they allow Metastacia to enter the opponent's body, leaving behind an empty husk that collapses. Metastacia can now control that person and cause their appearance to change into one resembling a Hollow similar to his mask.