Introduction By Jonathan Clements.
It's the year 2038, and Yuuma Sawatari is a typical space-loving elementary school student. When his parents buy him a robot named Nanako he's thrilled, although his excitement soon turns to disappointment upon the discovery that this machine is nothing more than a housekeeping robot. Or is it? When Nanako's system crashes, something incredible happens... it's taken over by an entity claiming to be marooned alien ship that needs Yuuma's help to return to space!