Bankai: Suzumushi tsuishiki

Bankai: Suzumushi Tsuishiki. The Bankai's main ability revolves around the creation of a vacuum that nullifies the senses of spiritual energy, sight, sound, and scent, called mumyō. Unlike with some Zanpakutō, Suzumushi does not convert itself into the massive dome that it creates during Bankai. Instead, the dome serves as a separate extension of Suzumushi itself, allowing the user to wield its sealed form as a weapon while inside the dome, but preventing him from using its Shikai abilities. The dome only exists as long as the user wills it to, or if he happens to become seriously injured; in either circumstance, the dome shreds apart and dissipates.