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Every person on Earth is assigned a Rank Mark at birth — a glowing number that defines your power, influence, and destiny. The higher your rank, the more abilities you unlock. Cities are ruled by S-Class elites. Corporations are built on A-Rank prodigies. Even schools sort students by power tier. Then there’s Jin Kairo. Above his head? Nothing. Labeled “Zero,” bullied, ignored, discarded — until the day the entire ranking system crashes worldwide. Numbers flicker. High ranks lose abilities.

This series is rated Young Adult. Please review the Content Ratings page for more information.