Shiro have at least defeated the Old Deus Holou, and now they're switching
gears: their next endeavor is to make Holou the number-one idol pop star in all
of Disboard! But amid the chaos of their pet project comes a strange message
from the representative of the 10th-ranked race, the Ex Machina... Is another
arduous battle on the horizon for Sora and Shiro?!