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?

When Kyutaro faces off against Seiryu Clan member Aoi Shinonome, he realizes how weak the snake inside him is. He decides to let his snake eat some of his "wishes" in an attempt to grow significantly stronger, but will this dangerous gamble pay off?