The background story of Super Robot Battle D

Humans, who have officially entered the era of the universe, are constantly expanding their life circle into the depths of the universe. Cosmic calendar 109, human beings and fighting races, Jetradi encounter, the first cosmic war broke out. During the war, some people reached a settlement agreement with Jay and successfully defeated the enemy fleet, thus ending the first cosmic war, and then the earth was abandoned because the war spread to the ground.

With the cooperation of Jetradi, the integrated government of the earth launched the earth regeneration plan. Since then, people have accelerated the pace of migration to satellite colonies, and at the same time, because of Jetradi's hyperspace navigation technology, they began the immigration plan to the outer solar system. With the gradual recovery of the earth's environment, some people related to the government and some privileged classes began the earth-centered return movement, and the population on the ground increased again.

Then in 123, the lunar surface research facility that wanted to study infinite energy and obtain the Gaeta line was suddenly attacked by a monster named Invinder. At the end of the fierce battle, although the United Army of the Earth successfully defeated Invinder, due to the relative unity of the colonial governments affected by the war, various protection policies were also put forward. Among them, the satellite group side3, which suffered heavy losses but was dissatisfied with the integrated government's handling of the aftermath, issued a declaration of independence in the name of Zion on 129. Because there was no response from space immigrants, the national strength of the government declined and was finally defeated.

Since then, the first person to study the Gaeta Line, Dr. Satome, suddenly launched a rebellion against mankind in the cosmic calendar 133. Satome's counter-insurgency ended in the attack on the central region by the unified military Chongyangzi missile, but it led to the increase of the polluted area of the Gaita line on the ground, and Wandell, which had been wiped out once, reappeared on the earth.

Due to a series of events, the opposition between the unified government and space immigrants gradually surfaced between 137- 138, and an all-out war broke out. In the battle, due to the internal division of the unified army and the attack of the Zion army based on the Axis, the unified army gradually weakened. In order to take countermeasures, with the cooperation of European privileged class group and Rome Ferrara consortium, a new team was quickly formed. Then in 145, the Roman Ferrara consortium and the United Army formed a secret organization oz to launch a military rebellion, which overthrew the unified government in one fell swoop and established a unified government in the earth circle. On the one hand, the universe, through this chaos, the activities of independent satellite groups are increasing. The Zanska Empire of side2 and the New Zion of side3 both issued their respective founding declarations. As a result, the respective forces in the earth circle entered the Warring States era of the universe.

Finally, at the end of neo zion's asteroid axis descent, something happened that surprised all mankind. ...