Eternal wars unfold in a distant realm far from Earth, where two species vie for supremacy as the most powerful beings in the universe. In their quest for dominance, they conquer and control other planets and their inhabitants to expand their power and influence. These beings are known as the "angels" and the "demons" (Author's note: this story draws inspiration from various mythologies, including Greek, Japanese, and even Christianity, portraying them as characters and sometimes antagonists). However, as countless years pass, some individuals begin to perceive their true intentions. These celestial beings aren't there to offer help or salvation; instead, they exploit resources and conscript others as soldiers. Amidst these troubling times, the idea of resistance takes root—an alliance comprising diverse creatures from across the universe who stand against their oppressors. In the midst of it all, an enigmatic child with green hair suddenly appears in the life of a certain man...