Dankū

is a Kidō spell.

Description
A defensive wall is created to protect against an enemy's attack. The practitioner creates a translucent barrier in the form of a large rectangular wall. According to 6th Division Captain Byakuya Kuchiki, it can stop Kidō-based attacks with power up to level 89,which is proven when Sōsuke Aizen uses it to block 's ''' #88. '''.

Incantation
"Fluid air, rigid air, strung as gold, worn as silver. Precious treasures, iron will, immovable plinth. Bridge the perilous path between reality and dreams, and coalesce into a single point before the throne of the king."