Tập 1: Kazehaya Kamito gặp Claire Rouge tại Học viện Tinh linh Areishia trong một vụ hợp đồng tinh linh thất bại.

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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... (Source: Wikipedia)