Mai

Mai is a Kamaitachi, a demihuman species with weasel-like attributes and two large sickle blades protruding from their forearms, which she normally covers to avoid harming others. Prevalent in Japanese mythology, the species inhabits the inland mountain ranges of Japan (most notably Yamanashi, Nagano and Niigata) and are said to be able to "ride the mountain winds" in small tornadoes at such a speed that they are invisible to the human eye. While within these tornadoes, Kamaitachi are said to attack humans by rushing them and slashing them with their sickle blades as they fly past.