Rowen, the Empire's Supreme Mage, was struck by magical backlash during the ultimate dragon-slaying battle and fell to a remote town. He was saved by Leila, the strongest swordswoman of the Vos family. For three years, he hid his identity, enduring ridicule as a "worthless live-in husband" — though his power had long since recovered. When demon armies besieged the city, chaos erupted. Betrayal brewed within the noble houses, and a fake knight stole his credit. The moment Leila was gravely wounded by the demon lord and the city was about to fall, Rowen stopped hiding. A golden giant sword crashed from the sky, impaling the corrupted head of the Marven family in one strike. The forgotten waste rose again as the Supreme Mage — defending the entire city, and the woman who had protected him for three years.
