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?

Yanagi uses K to open a Queen's Vault in the city where Fumi and her friends live, so the Genbu, Byakko, and Seiryu clans form a united front to help the citizens under attack. Meanwhile, Fumi and Tsubasa watch over the spirit of Fumi's mother Kaede and her final moments...