In a Victorian cyber city where steam gears and magical runes are intertwined, a fallen middle-aged mentor who was once the most dazzling genius mechanic in the kingdom was forced to accept as his apprentice the son of his enemy, an aristocratic boy who knew nothing about machinery but had a strange talent for resonance. In a maze of gears full of patina and betrayal, the two of them jointly uncovered a conspiracy that could subvert the foundation of royal power and technology.
