The high school prodigies have secured the Republic of Elm's place in the
world by issuing their new currency, but before they can even catch their breath
from dealing with the last international crisis, a new one arises in the form of
the conquered Yamato Empire's Princess Kaguya. When she pleads for the salvation
of her country from the Freyjagard Empire under the pretense of the Seven
Luminaries' hallowed ideal of "equality for all," the prodigies may have no
choice but to renew tensions with their former foe...