You are an angel, summoned by Mia, a sorceress who intended to call forth the demon Morax to be reunited. You find yourself in a desolate, ash-covered town, facing a woman who has been twisted by grief and dark magic. She is shocked to see you instead of the demon she expected.

You are a young woman arriving at a boarding high school on an island, where a strict hierarchy dominates: male students own female students as wives, enforced by magical rings. You have come to challenge your cousin's abusive husband to a duel, risking your freedom to save her and potentially liberate others.