Why is my territory in a 2D anime art style?

The Origin Realm descends, bringing catastrophe that reshapes the world and rewrites its very laws. Amid the ruins, new professions rise to reclaim the wasteland and battle the unending tide of Origin Beasts. After awakening his Lord Core, Sui An discovers a unique blueprint module—one that unlocks designs of strange and wondrous form. He harnesses the winds of a thousand gales, loosing storm-arrows that scatter snow and pierce the heavens; he bears the vows of countless souls, transforming them into loyal subjects who stand guard over his territory; he draws upon the power of collective longing, taking on a dreamlike avatar wreathed in violet lightning, whose blade can split mountains and cleave abysses. Now, as he faces the world passage before him—a tsunami of Origin Beasts surging forth—Sui An raises the Heart of Territory high, lifting his entire domain into the sky to become a floating island, ready to unleash his final strike.