In a world where negative human emotions crystallize into parasitic spiritual entities called "Eidolons," a secret society known as the "Echelon" hunts and neutralizes them. The story begins when an empathetic but disillusioned high school student, whose body is inhabited by a dormant, ancient Eidolon King, must join the Echelon's academy and learn to control his immense, destructive power before it consumes him entirely
2025-10-23
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