This may in fact have happened to me ten days ago. I'm still sore. 

In Japanese folklore kama itachi is a yokai that in English translates as sickle weasel. They look like weasels with spiky fur and long razor sharp claws and appear riding on dust whirlwinds, sometimes barking like dogs. They move so fast that they become basically invisible. Kama itachi travel in groups of three to hunt. The first weasel knocks the victim to the ground, the second uses their sharp claws to slice out chunks of their flesh, and the third applies a healing remedy that mostly hides the damage. This all happens so quickly that the victim believes they simply tripped, fell and scratched themselves and they remain completely unaware that their flesh has been dinner for a kama itachi.

Certainly can't disprove it.... Via Curious Ordinary on BlueSky