Wakai

Wakai (和解; lit. harmonic release) is the name given to the release that the kenrei perform to unseal their inner powers. It is comparable to shikai, though it has a tendency to be stronger than an average shikai due to the kenrei's fusion between shinigami and their zanpakutō spirits.

Powers and abilities
Due to the kidō spells used by the Kidō Corps in the experiments involved, the kenrei have a tendency to emit light from their eyes when Wakai is released. Unlike shikai, wakai does not require a release command or phrase. Akin to bankai, a wakai can simply be released.