> "Before every legend was written, there were whispers.
Before every hero rose, there were shadows.
And before every battle… there was a story."
— Archivist Yurei, Keeper of Forgotten Tomes
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Author's Note
Welcome, reader! You've stumbled upon the Auxiliary Volume of POWER ON.
Think of this as the hidden room behind the main story's door — the place where you can peek at maps, read classified files, uncover lost events, and learn more about the people, places, and powers that shape this world.
This volume will be updated irregularly, usually after a major arc or when new lore becomes relevant.
It's meant to enhance your understanding and enjoyment of the main novel — but be warned:
Some chapters will contain spoilers for ongoing arcs.
I'll mark those with ⚠ SPOILER WARNING at the top.
If you're reading along with the main story, you can skip ahead to the safe entries without missing anything crucial.
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Navigation Guide
Here's what you'll find in this volume:
1. World & Geography – Maps, territories, and descriptions of each major location.
2. Timeline of Events – The chronological history of Asteria, from ancient wars to Juichi's journey.
3. Character Profiles – Expanded details on main and side characters.
4. Power Systems & Abilities – The rules, ranks, and mysteries of magic and combat in this world.
5. Artifacts & Relics – Legendary items, their origins, and hidden curses.
6. Battle Records – Summaries of notable fights for quick reference.
7. Behind the Scenes – My personal notes, inspirations, and alternate concepts.
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Spoiler Key
⚠ SPOILER WARNING – Reveals events from unreleased or current arcs.
[SAFE] – Completely free of spoilers; you can read these anytime.
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Final Note Before We Begin
This archive is not part of the main story — nothing here will replace or skip the events you'll experience there.
Think of it as a companion book, a living encyclopedia that grows alongside the novel.
> And with that, the gates to the Archives of Asteria swing open.
Where will you step first — into the maps of forgotten lands, or into the stories of the ones who walk them?