Otora Gitsune

Otora Gitsune is a Japanese Yokai monster folklore in Aichi Prefecture.

Otora Gitsune is a fox possessing a person and makes whom act like unusual. The name Otora came from the name of a girl who was possessed.

Once possessed, the one will be suffered from left eye gum over flowing and painful left leg. It is because Otora Gitsune was shot its eye and leg at the Battle of Nagashino in 1575. The ones get possessed tend to be sick people. Once possessed, the one will talk about the Battle of Nagashino.
The reason why Otora Gitsune possesses people is because it used to live in a Inari shrine in Nagashino, but the battle made the locals abandon the shrine. Since then, Otora Gitsune possesses people.