Julius, Sovereign Prince of Amidonia, resumes his tyrannical rule after retaking the city of Van. However, after experiencing freedom, the populace revolts, sparking uprisings throughout the Principality. By popular demand, Souma is returned to power in Van, and shortly thereafter, he annexes the entire nation as a part of the Kingdom of Friedonia. The Gran Chaos Empire, leader of the Mankind Declaration, cannot let this stand. But when Empress Maria presses Souma on the issue, he finally tells her of the contradiction in her ideals. New personnel will move the country as the revolution continues onward!

The Gran Chaos Empire is the largest nation on the continent and the leader of the Mankind Declaration, a united front against the demons. Amidonia uses part of the text of that declaration which states, "The moving of national borders by force will be deemed inadmissible," as their shield, borrowing the might of the Empire to demand the return of their capital, Van, but Souma refuses. And so, negotiations begin with the Empire's envoy, Jeanne, the younger sister of the Empress. "We do want to enter an alliance with the Empire. A secret one." With the tempest of war behind them, the goals of the different nations send sparks flying in the seventh volume of this transferred-to-another-world administrative fantasy series!

"Starting today, I will formally become the king of this Kingdom of Friedonia." Having returned from the Union of Eastern Nations and rested awhile, the ceremony that will turn Souma from a provisional king to the true king is rapidly approaching. Because Souma's marriage to his fiancées is to be held on the same day, the capital gets more lively than ever! Meanwhile, using his own marriage as an impetus, Souma encourages his retainers to get married, too. Those who are already engaged to be married, those who aren't ready to be husband and wife yet, those who haven't even recognized their own love—Souma shows concern for all his retainers' different circumstances... The revolutionary administrative fantasy series, volume ten!

When Souma Kazuya was summoned to another world to become a hero, he didn't go on an adventure, he became the king of Elfrieden and took to governing instead. Using knowledge from his old world, Souma began to push forward reforms every day, but eventually there came a time when he would have to face the general of the army, Georg Carmine, who refused to soften his rebellious stance. When the plans of the neighboring Principality of Amidonia get involved, things move from the political arena to the military one. "Now, let the subjugation war begin!" Will Souma be able to safely bring this war to a conclusion?! This amazing transferred-to-another-world internal-politics fantasy series is on its second volume!

O, Hero! With that cliched line, Kazuya Souma found himself summoned to another world and his adventure--did not begin. After he presents his plan to strengthen the country economically and militarily, the king cedes the throne to him and Souma finds himself saddled with ruling the nation! What's more, he's betrothed to the king's daughter now...?! In order to get the country back on its feet, Souma calls the wise, the talented, and the gifted to his side. Five people gather before the newly crowned Souma. Just what are the many talents and abilities they possess...?! What path will his outlook as a realist take Souma and the people of his country down? A revolutionary transferred-to-another-world administrative fantasy series starts here!

With Souma's defeat of the giant monster that menaced the Nine-Headed Dragon Archipelago, the people of the Kingdom celebrate his achievement. However, as far as the rest of the world is concerned, someone else has done something even greater—reclaim a piece of the Demon Lord's Domain. That is what Fuuga, King of Malmkhitan, has accomplished. Within the Union of Eastern Nations, Fuuga's power and influence rapidly expand. Unable to accept this encroachment, the anti-Fuuga faction launches an unsuccessful attempt on his life. This sparks all the nations of the Union to be drawn into a massive conflagration?! When this conflict ends, the world will move on to a new stage. Here is volume fourteen of the revolutionary administrative fantasy series!

The war rages on as Souma takes on the rebellious three generals - but is everything as it seems? As the conflict expands, it's up to the crew to find a way to win without falling prey to manipulation upon scheme behind the scene. Can Souma survive? And with his reputation intact?