"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!
E1
University student Souma is suddenly summoned as a hero to the kingdom of Elfrieden, which is facing a number of crises, both foreign and domestic. Souma confers with the king and prime minister, after which the king makes a stunning announcement.
E2
Souma is checked for any magical powers, and puts his results to use with the administrative paperwork. Hoping to recruit more competent personnel for his staff, Souma sends out a nationwide broadcast offering prizes to the most talented in the land.
E3
The results of the talent search are in, and the kingdom holds a recognition and award ceremony for the winners. Five uniquely talented individuals come before Souma to demonstrate their skills, and find a place for themselves within his royal court.
E4
After Souma realizes the true gravity of Tomoe's ability, he ensures that it remains a secret, and that she is kept safe. Juna and Poncho host a program that shows how to prepare readily-available but unconventional ingredients during the food shortage.
E5
Juna and Poncho close out their cooking show with their take on udon noodles. Marx steps down as prime minister, and as Hakuya fills the vacancy, he insists that Souma get some rest. Souma, Liscia, and Aisha take a tour of the castle town incognito.
E6
At Café Sereia, Souma overhears two people arguing over whether or not to side with the new King. Hakuya analyzes the political situation in the neighboring lands with the King. Souma and Liscia discuss the nature of their engagement.
E7
Souma dispatches his magically-controlled mascot warrior to join an adventurer party. After securing funding with his team of accountants, Souma sets out to build a new port city and network of roads, but runs into opposition from the local residents.
E8
Kaede leads an engineering corps, including Halbert, in constructing a road. As the work detail receives a royal inspection from Souma and Liscia, an urgent message from Aisha`s father arrives, informing them of a natural disaster in their homeland.
E9
The Three Dukes meet to discuss what to do about King Souma. In Amidonia, Gaius receives word from Georg accepting his aid, and prepares to invade Elfrieden over the objections of his finance minister. Souma delivers his ultimatum to the Three Dukes.
E10
Gaius leads an invasion force from Amidonia into the kingdom and lays siege to the city of Altomura. Meanwhile, in Randel, the Forbidden Army constructs a fort from which they engage Georg`s forces, while Red Dragon City receives its own surprise attack.
E11
Souma and his entourage confront Vargas in his castle before hurrying off to Randel to regroup with the Forbidden Army. A stunning truth about Georg is revealed by Glaive, leading to a dramatic turn of events with Gaius and his forces at Altomura.
E12
Under Gaius`s command, the Amidonian army launches a full-scale attack to retake Van, but Souma and his forces move to stop them. In the aftermath of the war, there are serious consequences to be faced and plans for reconciliation to be put into action.
E13
Jeanne Euphoria of the Gran Chaos Empire is sent to Van to deal with the occupation. Roroa observes the newfound freedom of the citizens of Van. Poncho locates a source of food for the impoverished citizens. Souma, Juna and Tomoe enjoy a day off together.
E14
Julius, the son of Gaius, attempts to reclaim his former territory of Van from Souma, backed by the authority of the Gran Chaos Empire. The power to negotiate is given to Jeanne Euphoria, younger sister of Empress Maria Euphoria.
E15
Jeanne`s negotiations continue. These negotiations are no longer in the hands of Julius, but wholly a matter for the Gran Chaos Empire and the Kingdom of Elfrieden. Further, Jeanne sees a new future and a new world in Souma.