One day, Ikuto has a fight with his father and as a result runs away from home in the heat of the moment. Everything was going well until he boarded a ship, but then he carelessly fell overboard. After encountering the most serious raging storm in a hundred years, and spending many days adrift, he arrives here, at “Airantou”. However, this island is a little weird…because, this Airantou is an island comprising solely of girls. An (extremely enviable) destiny awaits Ikuto.