Qualidea Code - Information

Synopsis: On a still, peaceful day, the sky splits open and extradimensional beings, designated as the Unknown, launch a swift and brutal attack against humanity. To protect the country's future, all of Japan's children are cryogenically frozen until the end of the war to keep them out of harm's way.

Several years pass, and humanity has established a foothold in a corner of Japan that now serves as the front lines of the war. No longer facing humanity's extinction, the children are awakened from their slumber. It is discovered that while in cryogenesis, the children developed worlds, supernatural powers unique to each person. The six most powerful children are given command of the reclaimed cities, using their powers to defend the strongholds against continued invasion. Childhood friends Ichiya Suzaku and Canaria Utara lead Tokyo, brothers Kasumi and Asuha Chigusa manage Chiba, and Maihime Tenkawa and Hotaru Rindou oversee Kanagawa.

Over time, the almost routine attacks of the Unknown and the clashing personalities of the city's chiefs and subtitles cultivate petty rivalries, leading to constant arguments between the three cities. With the Unknown suddenly increasing the pressure of its attacks, the leaders of the three cities must learn to work together or risk losing the last line of defense against humanity's extinction.