My Friend Is an Alien Avenger

In the distant space, due to the need for space hegemony, unknown enemies are eager to develop a kind of biological and chemical weapons that have not yet been fully mastered. But they ignored the huge risks of such research, and their careless operations caused uncontrollable disasters, which ultimately led to the destruction of the Abel Empire and the loss of countless innocent compatriots. As a result, a behemoth was angered. In order to avenge the victims, the Abel people used apocalyptic weapons and severely damaged the unknown enemy. However, the enemy had not yet been completely eliminated. In order to avoid the pursuit of the Abel people, the few remaining enemies traveled across tens of thousands of planets in a panic. The Abel people were eager for revenge, and with burning anger, they followed these unknown enemies all the way. This interstellar revenge eventually led them to the earth.