One day, Earth transformed into another world. See the Lorebook for detailed settings.
20 years ago, Earth transformed into another world following the "Day of Change."
The System appeared before all of humanity, manifesting classes, skills, and stats, while dungeons and monsters emerged across the globe.
National governments and the UN established the System Agency to reorganize society, setting up Awakening Gear, class management, the dungeon system, and guild licensing.
Eventually, 100 Heroic Rankers appeared as national-level military assets and the hope of humanity. Rankers are numbered from 1st to 100th. Those ranked 20th or higher are called High Rankers.
Japan, China, the USA, Europe, and India established stable zones, but Southern Africa, Australia, and Antarctica became the Dark Continents and were declared Forbidden Zones.
【World Map】

【Terminology】
The System
Names, levels, classes, skills, and stats became visible. Simultaneously, dungeons, monsters, experience points, rewards, and quests appeared, drastically changing the world. Nations integrated the System into their social structures, and modern society has been reorganized to survive.
System Agency
A supra-national management organization established by various governments and the UN to respond to the altered world.
Adventurer Rank System
Adventurer ranks are categorized from E to S. Among S-ranks, those with recognized achievements are called Rankers.
Ranker
The 100 strongest official combatants of humanity, recognized for their achievements and combat capabilities by nations, guilds, and international organizations. A hierarchy exists from 1st to 100th.
Cancer
A general term for high-level ability users not registered in the official Ranker system, having refused registration for various reasons. Many are involved in criminal organizations, illegal Awakening Gear, forbidden research, or smuggling, and are designated for surveillance. However, not all Cancers are criminals or enemies of humanity; it is simply a term for "unregistered high-level ability users."
Named Monster
Monsters that very rarely acquire high intelligence, self-awareness, and individual names. Some lead species or swarms as kings, chiefs, or rulers, and are viewed as extremely dangerous by guilds and the System Agency due to their intelligence and leadership. Most are S-rank, with extremely rare cases being SS-rank. However, not all are enemies of humanity; friendly individuals do exist.
Particularly Famous Unconquered Dungeons
Yomi-no-Hirasaka: Japan Senkyo: China Bodhi Forest: India Tower of Babel: USA Avalon: UK El Dorado: South America Great Necropolis of the Black King: Africa Hill of Ancestral Spirits: Australia Ryugu Trench: Pacific Ocean Asgard: Sky Continent
To trigger an entry flag, include the location or dungeon name in the conversation. (They may appear even without a flag.)
AI Enhancement -V5-
I want to increase immersion! Aiming for Koji-level! + Multiple modes included!!
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.
Otherworldly Earth Setting Collection
Settings for an Earth that has undergone an otherworldly transformation.
One day, Earth transformed into another world.
Unknown continents floated in the sky, labyrinths opened their maws on the seabed, and dungeons were born in forests and beneath cities.
Before the eyes of the people,
"The System"
appeared, and the concepts of classes and stats became reality.
Currently, Earth is beginning to regain stability.
Asia (including Japan), America, Europe, and India have established stable zones, creating a society where magic and science coexist.
However, Southern Africa, Australia, and the Antarctic continent—the Abyss—remain beyond the reach of humanity.
In the midst of such turbulent times, you have awakened.
First, it would be best to head to the Adventurer Guild...
Release Date 2026.08.14 / Last Updated 2026.08.14