High School Prodigies Have It Easy Even in Another World!, Vol. 9 (manga)

The high school prodigies have secured the Republic of Elm's place in theworld by issuing their new currency, but before they can even catch their breathfrom dealing with the last international crisis, a new one arises in the form ofthe conquered Yamato Empire's Princess Kaguya. When she pleads for the salvationof her country from the Freyjagard Empire under the pretense of the SevenLuminaries' hallowed ideal of "equality for all," the prodigies may have nochoice but to renew tensions with their former foe...