Let’s become stronger, much more than now, and far beyond today――! Vivio and her friends, who have returned to Midchilda, have begun their days of special training for the Intermiddle. Their goal is to become the strongest teenage girls in the dimensional world――!! And finally, Einhart's beloved machine has been completed. Together with the special ancient Belka machine, Astion, created by Hayate Yagami, Rin, and Agito, they challenge the Intermiddle! The "Intermiddle Championship Arc," where young magicians gathered from all management worlds compete for supremacy, is officially underway!