Yamai (八舞 Yamai?) are the fifth spirit(s) to appear and the fourth spirit(s) saved by Shido. Yamai was originally one Spirit, but for some unknown reasons in the past, she was split into two bodies and minds. The original personality of Yamai is now gone, as well as what type of personality she used to have is unknown to the split Yamais. The Yamai Sisters have been well known to the people who knew about the existence of spirits because they often cause a major storm in an area, that occur every time they come to Earth.