Kamaitachi (鎌鼬) is a yōkai with long, sharp, sickle-like claws who appears riding a whirling wind, slicing and slashing people as it passes. It is often said to take the form of a weasel distorted by wind.
A kamaitachi variant that brandishes wind like a whip. Those who are struck by it are said to fall ill. In some places, it is also believed to haunt and kill the livestock of people traveling at night.