In a world where only pure maidens can contract with spirits, Kamito Kazehaya is invited to Areishia Spirit Academy by its director, loses his way in the spirit forest, and blunders onto Claire Rouge as she purifies herself in a lake. When Claire's attempt to bind a sealed sword spirit fails and the blade turns on her, Kamito contracts it himself to save her, becoming the world's only male elementalist. Claire, furious at losing her spirit, demands he pay the debt by serving as her contracted spirit instead. This first manga version broke off early, covering only the opening stretch.