Leonis—the Undead King, often called the Strongest of the Dark Lords—wakes up in a kid's body a thousand years after his own time. He's ten years old now, which is obviously a huge adjustment. His companions Riselia and Regina (who both call her "Selia" for short) help him figure out how to live in this strange new world, but Leonis isn't just along for the ride. He's got his own agenda, including a promise he intends to keep: fulfilling a wish made by the Goddess of Rebellion, his benefactor.
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