Kyūjūrokkei Kakafūmetsu

is a seal created by Kisuke Urahara to use on Sōsuke Aizen.

Description
It activates on its own when the target is weakened, piercing them from the inside out with several cross-shaped beams of light, which then merge into a single, vaguely star-shaped barrier, with the target sealed inside.

Incantation
Unknown

Known Practitioners

 * Kisuke Urahara