As he aims for the executive position, a man named Paul Verlaine appears before Chūya, calling him his younger brother! "I will kill anyone who intervenes with your heart," he announces. To thwart his plans, Chūya teams up with European artificial intelligence investigator, Adam. The sign of a storm waiting to swallow Yokohama brews once again. What exactly is Chūya Nakahara: the truth of the past shrouded in darkness shall now be revealed—!

    All he wants is a good job, a girlfriend, and his very own “persocom” the latest and greatest in humanoid computer technology. Hideki’s luck changes one night when he finds Chi an adorable, but seemingly broken, persocom thrown out in a pile of trash. After taking her home, Hideki discovers that Chi is more responsibility than he expected and that there’s much more to his cute new persocom than meets the eye.

    So what happens when he awakens one day to a talking lizard, who informs him that there is a gigantic hammer in outer space that is poised to split the Earth into pieces and requests his allegiance in the fight against the forces of evil? Pretend it never happened? Unfortunately for Yuuhi, a bit of coercion in the form of a super-powered princess prevents him from returning to his mediocre life-as-usual.In the adventure of a lifetime, Yuuhi will join forces with the capricious princess and a motley crew of companions to fight back against an evil mage and his horrifying homunculus before the Biscuit Hammer can destroy the planet!