Duke, a demon, initially wanted nothing to do with Damion, but fate had other plans when Damion unintentionally freed him. Duke, in the guise of a loyal cat, chose to remain by Damion's side as he grew from a boy into a man. As Damion's family life began to fill with unexpected intruders and bizarre occurrences, Duke's protective instincts emerge. He fiercely guards them against the enigmatic forces that disrupt his after-school life, the strange entanglements of a partner, and even the looming presence of demon hunters from an era long past. Yet, beneath the layers of his vengeful past and newfound powers, Duke discovers a warmth in human love he had never known. As he navigates this unexpected bond, he's reminded that his true desire lies not in realms and power, but in being with the one who has touched his heart. Unbeknownst to him, a pact with this human unlocked a power beyond his imagination. Their connection deepened, revealing the profound meaning of love and trust. The extraordinary lengths he was willing to go to protect those he holds dear.