Siren is the absolute queen who administers the state of lakeside park city, which boasts a 99.9% safety and happiness rating. One day, one of the Ondine, the information terminals born from her, gets lost and helped by an uncouth boy named Len Kinami. Ondine feels a warmth from Len, who complains as he pulls her hand along, but that emotion flows in to the queen, who becomes bewildered by the unknown feeling! "Happiness is our duty."
Source: Comic Walker