The Purification Exemption

After the Purification Wall physically divides the Republic of Haedong and the Federated States of Kamijima, twin sisters separated at birth discover a hidden tunnel and a chilling legal loophole—an ancestral craft exemption—that allows them to traffic the ultra-pure water technology vital for semiconductor supremacy. As they descend into a world of survival crime, they slowly realize that the flaw in the law was never an oversight, but a deliberate backdoor left by the powerful to drain the lifeblood from both sides. Told through dual unreliable narratives, the story unravels a conspiracy where clean water becomes the deadliest weapon.