“In the near future, plutocrats replace the regime, and wars are fought for profit.
The Igoodra Corporation discovers alien remains and the remains of their equipment in the near-earth universe – code name [Urd], and in turn discovers a mysterious particle that mankind has never known, called the Delta Particle.
The appearance of the Delta Particle upset the balance of human power. With the unique Delta technology, the Igoodra Corporation developed a powerful malleable tactical exoskeleton – Aeta, and its military power reached absolute superiority over the Zaibatsu.
In order to consolidate its interests, Igodra Corporation built a huge circular orbital base, Gray City, over the equator and carried strategic-grade weapons on it.
The existence of Grey City threatened the interests of other Zaibatsu, who united to form the “Human Alliance” and attacked Igodra. In the end, the Human Alliance won the war at a terrible cost, crippling the Grey City, but leaving the absolute power of the Iggodra Corporation untouched.
In the course of the war, the Human Alliance captured the artificial lifeform 01 made by Igoodra based on Urd, and then researched its own Delta technology and Aeta, breaking Igoodra’s monopoly on Delta technology, and the Human Alliance and Igoodra entered a confrontation period.”
