Tanjiro's Dragon Evolution System (DxD Fanfic)[On Hiatus]
Autor: Chaotic_Sovereign© WebNovel
Various Levels and Grade Classifications.
Power levels
Tier 1 – Low-class Devil/Angel
Tier 2 – Mid-class Devil/Angel
Tier 3 – High-class Devil/Angel
Tier 4 – Ultimate-class Devil/Ten Seraphs
Tier 5 – Satan class/Four Great Seraphs/Dragon Kings
Tier 6 – Super Devils/Evil Dragons(Only a few of them)/High-level Gods.
Tier 7 – Heavenly Dragons/ Highest-levels Gods such as Shiva, Ophis and Lilith (after Ophis's power was divided in half)
Tier 8 – Dragon Gods/True Dragon/Trihexa(666)/ God of Bible (possibly)
Tier 9 – Highest level of DxD world.
....
Grade of skills and items.
Common << Uncommon << Rare << Ultra Rare << Unique << Legendary << Divine << Immeasurable.
.....
Energy value of each level. (Mostly mana)
Low-class: 10 – 100
Mid-class: 100 – 1,000
High-class: 1,000 – 5,000
Ultimate-class: 5,000 – 50,000
Satan-class/Four Great Seraph/Cadre/Dragon Kings: 50,000 – 150,000
Super Devil/High-level Gods/Evil Dragons: 150,000 – 450,000
Heavenly Dragons/Highest level Gods: 450,000 – 999,999
Dragon Gods/Trihexa: One Star (Having energy equal to a star, often considered boundless.)
Wöchentlicher Energiestatus
-- Power-
Rangliste 
-- Power-
Stein