With the war over and no battlefields remaining, where do the sayabito belong? In order to manage these weapons, Kuifa and Rivia journey across the world to protect unregistered sayabito on behalf of the government organization, the Protettori. When rumor swirls around an aging horticulturist, the pair go knocking on his door. The girl who answers, however, is the spitting image of the man's late daughter… Before long, Kuifa and Rivia learn that not all the sayabito they meet want to be saved, and some are even moved to take matters into their own hands.