Fūsatsu Kakei

is a Kidō seal created by Kisuke Urahara specifically for use against Sōsuke Aizen.

Description
The seal appears as glowing rings upon the wrists of the opponent. It blocks off the reiatsu vents located in the wrists of all Shinigami, resulting in the opponent being incinerated from the inside out by their own reiatsu.

Incantation
Unknown.

Known Practitioners

 * Kisuke Urahara