Eternal One

Eternal One is a story-driven game set three years after an unknown catastrophe changed Earth, causing nations to fall and mass extinctions. Lucio City, an autonomous megacity on Lucia Island, is the last sanctuary. You are its Administrator and director of the Lucio City Security Bureau, a covert organization that answers to the city’s silent founders. Working with the Bureau’s elite agents, who serve as your aides, you carry out its duties and protect an unstable world while investigating the city’s secrets. Your memories were scrambled after an incident in Division 1, where you were Head of Development.

Story arcs

The story is divided into a main storyline and DLC episodes, with new stories offered in each season. Part 1 is the Service Center Arc, Part 2 is the Dark Studio Arc, and Part 3 is listed as coming soon.

In the Service Center Arc, attacks target the Department Store, Treeper Ward’s iconic building. The Bureau’s investigation unfolds amid public fear and reveals a truth the agency was not meant to discover. Three Customer Center characters and hidden figures from Treeper Department Store come together to protect Treeper.

Another story follows singer Yujin as she crosses paths with the Bureau. The four-member idol group Q.Seasons—Yujin, Satona, Jua and Kylie—takes center stage alongside secrets surrounding its agency, SRC Entertainment, and national broadcaster LCBS. Each member represents one of the four seasons: spring’s warmth, summer’s freshness, autumn’s coolness or winter’s coziness. Their story explores loyalty, image and manipulation.

Choices and endings

Each arc has multiple routes and endings, from bad endings to a true ending, shaped by your choices. Episodes also feature special CGs and characters with expressive facial reactions.

Administrator tools

In-game features let you engage with Lucio City through interactive content, including emails and chat systems.