In the manga, Keitaro Urashima originally came to the island after Seta "recruited" him to help replace an ancient stolen artifact. The Hinata residents follow after them when Granny Hina sends a fax dictating her arrival and the official handing over of the dorm’s deed to Keitaro. In the anime the kingdom isn’t shown, though it is mentioned. The country has a military conscript program that even royalty must obey, with a minimum of three years service. This military is evident in the manga with the presentation of the Royal Air Force’s Third Mobile Fleet.