This time, it was Kyotoryu Form Five: the Yorugao.
Straddling his legs shoulder width apart, hands relaxed and open, and poised in front of his chest, with elbows bent – somewhat aggressively for an idle stance, his body appeared ever so slightly to lean forward, allowing him to keep a steady footing in the unfamiliar snow.

Katanagatari Omnibus 2, Page 280