Areishia Spirit Academy: a place where young girls train to become elementalers, where no men are allowed. Kazehaya Kamito gets lost trying to head to the school, and runs into Claire Rouge, a girl purifying herself for a spirit contracting ceremony. She tries to contract with the Demon Slayer, a sword that no one had succeeded in contacting with before, but it goes out of control...
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.
