In the Wahrheit Empire, two young individuals are preparing to move to the capital: Inumael, a reserved transporter who has left his cherished sister at their family home, and Leocadio, an inexperienced soldier who dreams of his military future while residing in the imperial city.

In this empire, a vast number of people were once wiped out. A prophecy warns of the return of the “light,” a calamity that unleashed a terrifying monster upon the world, leaving the spirits of the surviving humans shattered. Amidst this turmoil, a single weapon smuggling incident will dramatically alter the destinies of Inumael, Leocadio, and the Empire’s history.