This technique is a majutsu illusion that easily rivals some of the higher ranked genjutsu used in modern times. After the incantation is recited an black oily mass will begin to expand from a designated location. Victims caught in the illusion will then sinks into the substance until they are completely immersed and the feelings of claustrophobia, suffocation, and panic set in. If the user fights too long thinking that the oily substance is actually real it is possible that their body will attempt to close their lungs up causing them to pass out or, in a worse case scenario, die. Yokōkaze has shown that this technique can be modified to be used with her dōjutsu.