 Naota later finds Haruko working in his house as a live @-@ in maid . It is later discovered that Haruko is an investigator for the Galactic Space Police Brotherhood . Haruko uses Naota for her search for the Pirate King , <unk> . She is at odds with Medical Mechanica , a monolithic industrial corporation . Naota is being watched by Commander Amarao , a special agent of the Bureau of Interstellar Immigration , who believes that Medical Mechanica is out to conquer the galaxy . Naota is ultimately drawn into a three @-@ way battle between Haruko , Amarao and Medical Mechanica . 
