Masashi Hironaka

In the near future, Earth has been devastated by an immense war. Haruka, a girl living in the ruins of Japan with five robot companions, may truly be the last person on earth. Amid the desolation and constant attacks from Combat Machines whose war will never end, Haruka fights to find a way of life, and track down other human survivors.

One day, Joe Maya, who lives on Mars, witnesses a battle between aliens. Those from Planet Zaboom are attacking the princess of Planet Radorio, she has escaped from the emperor of Zaboom who is scheming to conquer the universe and has crash landed on mars. Joe stumbles aboard the princesses ship, this starts a chain reaction of events that will alter their lives. Joe and his friends wield three powerful mecha beasts against the emperor of Zaboom and his forces, but the odds are stacked heavily against them. When all hope seems to be lost a mysterious ninja robot named Tobikage appears as if from nowhere to provide assitance, able to combine with the 3 mechanical beasts provides Tobikage with unmatched power, with his aide Joe fights the forces of Zaboom...

For decades, the Galactic Empire has been locked in an interstellar war with the Free Planets Alliance, a conflict that involves thousands of spaceships and millions of soldiers on both sides. Two new commanders enter the conflict with great hopes: Imperial Admiral Reinhard von Lohengramm and the FPA's Yang Wen-Li. As they deal with superiors and subordinates, maneuver through complicated political arrangements, plot strategies, and win battles, each will be tested, and ultimately, changed, by the reality of war.