[Machine Translation] Allen has achieved great success in the kingdom's uprisings, but he has been unfairly demanded by the domestic nobility. With the help of his partner, "Sword Princess" Lidiya, he escapes from the capital to the city of Suito, the central city of the Confederation of Marquis, an enemy nation at war! For the first time in a long time, he is alone with Lidiya without the other students. She is enjoying her honeymoon, staying at a luxury hotel and sightseeing in the historic water city, but her role this time is to negotiate for peace underwater in the city. The series of escapades is a plot by the Dukes of Lindster to establish Allen's position! The unaware, out-of-this-world tutor, together with his partner, will make new history in the city of a thousand years of intrigue!