A legend says that the ghost of a girl stands on the top of an old Catholic church, inhabited by the Sagimiya family. Said family has a hateful rivalry with the Bijogi family, who manage a Taoist temple next door. In the middle of all this, Bijogi Taiga has had a crush on Sagimiya Anna, the demure daughter of the priest, since childhood.
Little did he know, the Sagimiya are involved in very un-Catholic activities such as trying to resurrect the spirit of Marie-Thérèse Charlotte, the food-obsessed daughter of the late French queen Marie Antoinette. And since he has found out, he will have to "collaborate" − i.e. be the human sacrifice to that end. Nevertheless, just before the "ritual," Taiga decides to confess his love to Anna and is struck by a lightning bolt the second after. He miraculously survives without a scratch, but somehow finds himself in a body slightly more... blonde and feminine.