The whole town is abuzz with the Festival of Valentia, and Kamito and Ellis are doing their duty as knights to keep everyone safe. A mysterious girl approaches Claire when she's feeling down about how weak she is. Claire almost loses after being controlled with magic, but is saved due to help. However, two others have already fallen to the mysterious girl's tricks...
Only a pure maiden can have the privilege to contract with a spirit. Priestesses, who can summon spirits from Astral Zero, the world of spirits, and have full command of their power, are called elementalists. Kamito Kazehaya is the only male with this privilege, and due to what happened in the past he comes to Areisha Spirit Academy where priestesses are trained to become elementalists. He is then told that he is to transfer to the school, form a team with priestesses to compete in Blade Dance where the most powerful elementalist is chosen, and win.
