Chapter -1 - Ranking

1. Low-Class

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2. Middle-Class

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3. High-Class

- Most of Pillar Devils with their Clan abilities are in this rank, even if they didn't master their abilities

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4. Ultimate-Class

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5. Satan/Cadre/Seraph/God/Dragon King/-Class

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6. Super Devil/Archangel/High-God/Heavenly Dragon/-Class

- Strongest beings of DxD are at this level

- All members of the Top 10 Strongest Beings of the World are in this category

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7. Apocalypse-Class

- Ophis, Trihexa or The Great Red are in this category

8. Transcendent-Class

- Will be shown when the Conjunction of Spheres happen