[This chapter serves as a guide to the concepts explored throughout the story; written with the intent of freeing readers from excessive descriptions and exposition during the narrative—thus preserving its rhythm.]
{The content will be explained at times and will appear throughout the story's development.}
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𖣂︎ Revelation
It is the individual process performed by each Revealed, in which an Archangel chooses a person to Inherit the Great Will.
𖣂︎ Revealed
Those who undergo Revelation.
𖣂︎ Wave of Revelation
When a group of Revealed individuals emerge, it is called a Wave of Revelation—a metaphorical and spiritual event in which people of any age may be struck.
The result of being touched by the Wave of Revelation is receiving a Burden.
𖣂︎ Great Will
The source of Virtues—the opposite of sins. The Sefiras are bound to follow the Virtues above all. The Great Will defines what is good and what is evil.
𖣂︎ Burdens
The side effects of Revelation are known as Burdens, which can manifest in sensory (affecting one or more human senses), psychological, or physical ways.
> "The archangels do not give us burdens—they simply reveal who we truly are…"
—Kimisu Hinode, Chapter 7.
𖣂︎ Sefiras
After completing the process of Revelation, the Revealed become Sefiras—regarded as the Heroic Saints of humanity.
𖣂︎ Non-Bearers
Those who devoted their entire lives to becoming Sefiras but were never struck by a Wave of Revelation are known as Non-Bearers.
𖣂︎ Heritages
Once the process of Revelation is successfully completed, the Sefiras acquire a Heritage—cards that perfectly describe their behavior during the process.
Heirs possess a Red-colored System.
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✡ Profanation
If a Revealed fails to endure their own Burden, they become a Profane—a human who walks the path of a demon.
To represent this change, the System adopts the color Black.
✡ Daemons
Daemons, demons, or Tempters are beings that dwell within a domain—creatures born from the ashes of the dead, negative emotions, or manifestations of sin.
> "Some demons wear human skin but act like mindless beasts… If you let your mind be overtaken by wrath, you won't be much different from them."
—Izumi Kairen to Erika Von Berta.
✡ Temptation
The corruption that seeks to consume the human mind—sins, desires, anything that opposes the Great Will.
If a Sefira becomes tainted by Temptation, they automatically turn into a Profane.
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𖣂︎ Sefira Ranking
Each Rank bears a name and a maximum level, indicating the peak strength its bearer can reach.
Rank F: Feeble — Level 120
Rank E: Emerging — Level 240
Rank D: Disasters — Level 360
Rank C: Cataclysms — Level 480
Rank B: Beyonders — Level 720
Rank A: Arbiters — Level 960
Rank S: Sephiroth — Level 1200
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𖣂︎ Promotion
When a Sefira reaches half of their maximum level, they enter a state of Rank Promotion, where the Archangels personally evaluate whether the Sefira should advance. Upon reaching the maximum level, the Archangels may—or may not—evolve the Sefira.
𖣂︎ Rebirth
When an Archangel decides to promote a Sefira, the Sefira's levels are reset. However, they return with a progression multiplier, allowing them to regain their former strength more easily.
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✡ Daemon Ranking
Following the same logic as the Sefiras but with different names:
Rank F: Fragile
Rank E: Exiled
Rank D: Defiant
Rank C: Chastiser
Rank B: Beasts
Rank A: Archdemons
Rank S: Sovereigns