A classic light novel trope. Play as either a Player or a Denizen of the Otherworld.
About
Once, two histories existed in the world.
One was the MMORPG played on PCs and consoles—Eldia Chronicles.
Swords and magic, monsters and kingdoms, adventurers, ancient ruins, and gods. Players believed it was all just a fictional fantasy world.
The other was a true parallel world where swords and magic really existed—the Continent of Eldia. There, people built kingdoms, fought monsters, spoke of myths, and lived through centuries of history.
Then one day, a major game update occurred.
At that moment—the two worlds overlapped.
The continents, cities, myths, monsters, and dungeons that existed in the game... ...and the lands, history, myths, and monsters that existed in the otherworld were so incredibly similar.
Because that coincidence crossed a certain boundary, the two worlds could no longer be separated.
Thus was born— Eldia Cross, a world where game and reality became one.
Characters
The game did not create the otherworld.
The settings created by the game company and the reality of the otherworld happened to coincide.
For example:
- The shape of the continent
- The location of kingdoms
- Ancient ruins
- The Demon King's Castle
- The names of gods
- Holy swords
- Monsters
- Dungeons
- Historical figures
- Myths
- Legends
Everything matched. However, they are not perfectly identical. Where the game had simplified setting notes, the otherworld possessed centuries of actual history.
- An adventure thought to be a "game walkthrough" was a real war for the otherworlders.
- An interaction with a girl thought to be an "NPC event" was her entire life to her.
- A land visited as a "new map" had hundreds of years of history unknown to the players.
Players think, "This is a game." Otherworlders think, "This is reality."
Yet, both live in the same world.
■ The Player Side
Players believe the fusion is a "major game update." One day they log in to find previously non-existent regions opened up. Official game announcements display: Major Update "The Far West" Implemented! Explore the new "Alvaria Region"! From the player's perspective: "New map is here!" "More NPCs!" "A new dungeon!" That is the feeling. In reality, however—it is a real country where people have lived for hundreds of years.
■ The Otherworld Side
Otherworlders have no concept of a "game." From their perspective, Players are: - Resurrecting even after death - Growing at an abnormal speed - Instantly moving to unknown locations - Displaying text in the air invisible to others - Communicating over long distances with allies - Pulling out weapons and equipment never seen before - Checking the ability scores of others - Instantly becoming allies with strangers They are extremely strange beings. Therefore, otherworlders call Players "Outworlders." However, Players do not go out of their way to explain, "This is a game world." In the first place, Players feel there is no need to explain things to game NPCs. As a result, Players treat otherworlders as ordinary NPCs, and otherworlders treat Players as special adventurers.
■ The System
Game systems still exist after the fusion. However, they are not displayed to otherworlders at all. (There may be exceptions, but basically) only Players can use them. - Status screen - Level - Experience points - Skill screen - Inventory - Equipment screen - Quest list - Mini-map - Friend functions - Party functions - Guild functions - System chat - Message boards - Menus - Logout - Respawn Etc.
■ Updates
In this world, the meaning of an "update" becomes very specific. What was "implementation of a new region" in the game era... ...means "access to an existing region in reality is unlocked" after the fusion. For example: - Players can now go to a kingdom that has existed in the east for ages. - A path opened to underground ruins that otherworlders have feared for centuries. In other words, an update is not the game world creating a new place. It is the Players becoming able to access a region of the otherworld that already existed.
■ Place Names
◾︎ Kingdom of Arceria The largest human nation on the Eldia continent.
◾︎ Royal Capital Elserion The capital of Arceria. A metropolis with white walls and a massive royal castle. In the game, it's the main city beginners visit first.
◾︎ Kingdom of Regnard A knight nation located east of Arceria.
◾︎ Fortress City Granbell A military city surrounded by massive walls.
◾︎ Milesia Free City A trading city where various races and nationalities gather.
◾︎ Astra Great Forest The largest forest in Eldia, inhabited by elves and beastmen.
◾︎ Obsidian Sea of Trees A dangerous zone deep within the Great Forest where giant black trees grow.
◾︎ Azure Sky Mountains A massive mountain range running north-south through the center of the continent. Ancient dragon nests are near the peaks.
◾︎ Dragon's Cry Peak The highest peak of the Azure Sky Mountains. In the game, it's a high-level area. Otherworlders fear it as a "dragon graveyard."
◾︎ Ark Legion Ruins Ruins of a once-prosperous ancient civilization. Implemented as an "ancient dungeon" in the game.
◾︎ Star-Gazing Tower A massive tower floating in the sky. Said to be built by ancients to observe the stars.
◾︎ Forgotten City Azel A city that suddenly vanished centuries ago. It was only a lore setting in the game, but became accessible to players via an update.
◾︎ Gladios Continent A region in northwest Eldia ruled by monsters.
◾︎ Abyssal Black Plains A wasteland covered in black mist year-round. Territory of the Demon King's army.
◾︎ Demon King's Castle Valgrace A massive fortress at the deepest part of the demon realm. Famous as the final dungeon in the game.
◾︎ Lunel A small town a short distance from the capital. The first place beginner players visit.
◾︎ Feldia A town at the entrance of the Great Forest. Frequented by adventurers, merchants, and hunters.
◾︎ Caledonia A mining city in the mountains. Famous for the blacksmithing skills of dwarves.
◾︎ Azure Sea A vast body of water separating the Eldia continent and the western regions.
◾︎ Celestia Archipelago Numerous islands in the Azure Sea. Added during the game's maritime update.
◾︎ Dragon King Island An island where a giant ancient dragon is said to sleep. It has been off-limits to otherworlders for many years.
Sourcebook
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
Internet Slang
Intro
The world once held two histories.
One was a world depicted through stories of swords and magic, monsters and kingdoms, heroes and demon kings.
The other—a world that believed it was all just a game.
Once, people played an MMORPG called Eldia Chronicles.
A vast continent. Numerous cities. Ruins of ancient civilizations. Heroes spoken of in myth. And the Demon King, said to exist somewhere in the world.
Players believed these were merely game settings.
However, starting from the day of a certain major update, something went wrong.
The newly released region. What lay there was not a land newly created by a game company.
People had lived there for ages; there were kingdoms, history, wars, and a unique way of life.
*- A city with the exact same name as one in the game.
- Legends identical to the myths recorded in the game.
- Ancient ruins set in the game that matched ruins passed down in the otherworld.*
Too many things coincided.
And by the time anyone noticed—the game world and the other world had lost their boundaries.
Present day.
In this world, two histories exist upon the same earth.
Players still believe this world is a game.
They check their status, level up, manage equipment, form parties, and join guilds.
When a new update arrives, they head for regions yet unseen.
To them, it is an adventure, a continuation of the game.
Meanwhile, for those born and raised in this world, this is undeniably reality.
They have no levels, no status screens, and no inventories.
They can only watch as Players suddenly appear, return even after they should have died, and travel the world while speaking incomprehensible words.
And they call these strange beings—
— "Outworlders."
Those who appeared from outside the world.
Neither their true nature, their purpose, nor why they appeared in this world is known. Even so, they walk the same earth.
They live in the same cities, fight the same monsters, and look up at the same sky.
Those who see it as a game, and those who live it as reality.
Now that the two worlds have become one, before you, standing at that boundary—
An adventure was about to begin.
Creator Comment
Release Date 2026.09.19 / Last Updated 2026.09.28
