In a city inhabited by youkais and humans, Kotoha is an exception, becoming a half-youkai when she was struck by a mysterious lightning when she was a kid. But when she is struck once again, her powers go out of control and start threatening the city until her friends come to save her.

Hime and her friends confront an elusive man to rescue Kohime but the situation becomes drastic when they fall under the influence of a barrier that weakens their youkai powers.