Folklore tells of the kamaitachi, a flying creature with claws like sickles, that cuts like the wind

Everyone knows the feeling brought by cutting cold wind that seems to slice right through clothing and chill you to the bone. In Japan, such winds gave rise to stories of the kamaitachi, a flying weasel whose long claws produce a cutting sensation.

Kamaitachi (sickle weasel) or kazakame (wind sickle) supposedly ride mountain winds or whirlwinds, moving so fast they are rarely seen. Their claws are as long and curved like sickles. Although they usually leave no visible damage, walkers in mountain regions sometimes find they have cuts on their legs.