21-year-old Duen thought landing a job at Sphere Inc. would finally turn his life around. A steady paycheck, a new apartment in Solzen, and maybe—just maybe—a chance to reconnect with his childhood crush, Lia Curtiss.

But one night, everything shatters.
A dark shadow crawls out of the mirror, dragging him into a blazing abyss. When he wakes, he’s no longer in the city—he’s in Havone, a medieval world ruled by knights, dragons, and war.

Caught between two worlds, Duen discovers the Stone of Eternity—a mysterious power that connects Solzen and Havone, revealing that every choice, every tragedy, is part of a much larger design.

As he learns to wield this power, Duen must face the truth behind the worlds’ connection and his own fate. Because the line between science and sorcery is fading… and the cost of failure may be losing the girl he’s loved all his life.