Invisibility

Invisibility is a technique of Maki Ichinose's Zanpakutō, Nijigasumi.

Description
Ichinose can become invisible to the naked eye by refracting light around his body so that others only see the area behind him even when looking directly at him; this allows him to perform surprise attacks and sneak into heavily guarded areas unhindered. However, he can be forced out of this shroud if an opponent deduces where he is located and either attacks him or blocks his strikes, with the physical force causing him to shimmer back into view.