ZYCA

In ancient times, Earth was home to a vibrant mechanical civilization of remarkable advancement. That era ended when the magic mechs turned against humanity and unleashed a devastating disaster upon the world.

Facing threats from beasts and rogue magic mechs, survivors banded together to build a new sanctuary known as the City of OS. For a hundred years, it has stood as a refuge against the chaos beyond its walls.

Now researchers have discovered that the secret of the disaster lies hidden within ancient ruins. At this crucial moment, the leader of OS vanishes during an expedition into those very ruins, leaving the city without guidance.

With tensions between OS and its enemies escalating, war looms on the horizon. Players must navigate this fragile world, uncover the truth buried in the ruins, and decide what the future holds for the last sanctuary of humanity.