Fumi Nishioka lives with Kyutaro Horikita and his family of "Sweepers," people who specialize in cleaning the minds of those overcome by negative energy and harmful spirits. Fumi has always displayed mysterious abilities, but will those powers be used for evil when she begins to truly awaken as a Queen?

K turns out to be a monstrous remnant of Fumi's mother, and Yanagi is the despicable Suzaku leader who orchestrated this transformation! What's worse, Yanagi is actually Fumi's father! Fumi swears that she will destroy both Yanagi and K, but first she must learn about her mother's past from Tsubasa...