In contemporary Japan, vehicles equipped with artificial intelligence for enhanced safety—dubbed "A.I. cars"—have transformed the automotive sector. Dedicated academies train youngsters in piloting these intelligent vehicles. One afternoon, Kakeru Todoroki, a fifth‑year student at Arcadia Academy, was called by the headmaster and entrusted with an A.I. car "to safeguard humanity through selected drivers such as yourself." Yet the vehicle is more than a machine; it also converts into a robot called "Gyrozetter."