Then Shichika, in turn, took his position.
Opting for Form Six – the Hozuki.
Bracing his neck, he placed the blades of his hands on both sides of his head, to use their power for defense rather than offense, then jutted out his elbows in a symmetrical fashion and stood up on his tiptoes – affording him incredible mobility.
If Form Seven, the Kakitsubata, was designed to give him total freedom to move back and forth, the Hozuki gave him total freedom to move left and right.

Katanagatari Omnibus 4, Page 201