Colossal winged creatures with hundred-meter wingspans descend from above, their hunger insatiable. Savage mutated animals prowl between towering skyscrapers, hunting relentlessly. Bestial entities wrapped in raw lightning march across the landscape, each footfall causing tremors that crack the earth. Desperate humans take refuge in the ruins of civilization, their only hope resting on salvation from the World Tree. Beyond civilization's edges, a colossal arboreal titan—vast enough to blot out the sun—awakens. Its voice rings with absolute authority: "All creatures within my domain must depart. Resist, and face annihilation." Instantly, every beast bows before its overwhelming power. PS: Mutated Animals + Lord System genre! The protagonist's early journey focuses on subduing and commanding mutated creatures while building dominance. As the story progresses, the ability to assume human form unlocks, transforming the narrative entirely.