You Think Beast Tamers Are Weak? I'll Build a Heavenly Court for the Demon Clan

After transmigrating to a world where everyone changes class, the protagonist finds himself in a land ravaged by monsters and invaded by the Abyss, with humanity facing annihilation. He awakens as a Beast Tamer, devotes himself to his teammates, and is ultimately kicked out of the party and abandoned by his childhood sweetheart! But no one knows that his Empowerment spell doesn’t empower spirit pets. It awakens their intelligence and bloodlines! Empower an ordinary beast and awaken its spirit, and it becomes a demon. Empower a monster and awaken it, and it can become a Demon King! Empower a leopard cat, and it transforms into a Shadow Spirit Cat Demon, with shadow ambushes and the Spirit Cat’s Dance! Empower a Blazing Crow, and it awakens as a Three-Legged Golden Crow! Its Great Sun True Flame burns the heavens and boils the seas. It becomes a radiant sun, shining across the Myriad Worlds! Empower a deep-sea leviathan, and it transforms into a Northern Sea Kunpeng! Its wings stretch like clouds hanging from the sky; a single beat carries it ninety thousand miles. It commands formations and armies, and wields the laws of heaven and earth! Empower a Blackwater Serpent, and it evolves into a Nine-Clawed True Dragon! It commands wind and rain, summons thunder and lightning, and rules the world...