Hōzan Kenbu

is a Zanpakutō technique used by Tatsufusa Enjōji.

Description
Tatsufusa swiftly swings his Zanpakutō around his entire body without cutting himself. The speed of this technique makes it difficult for an adversary to get close to him in order to attack at close range without risk of serious injury. Despite Tatsufusa's claim of the technique being impenetrable, it is far from so, and a skilled enough opponent can circumnavigate the attack; Sado claimed that the technique's defense was full of openings.