Duke had slumbered in the depths of the ancient forest for centuries, a shape-shifting demon of the past when he wielded power over human civilization. But that power was long gone, buried beneath layers of time and solitude. He had become a creature of the shadows, a beast unseen by the world.

Then came Damien, a lost boy with curiosity etched into his features, who stumbled upon Duke hidden prison. Unintentionally, Damien freed the demon from his age-old prison, a simple accidental act of fate that would bind their destinies in ways neither could foresee.

Duke now known as a black cat, now concealed in the form of a "loyal" cat, ready to watch Damien grow from boyhood into a man, he couldn't help but feel an unexpected connection.

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But as Damien's family life became increasingly tangled with unforeseen intruders and peculiar occurrences, Duke's dormant, hidden protective instincts began to stir. He would guard them fiercely against the enigmatic forces disrupting their everyday existence.

Yet, in the midst of protecting Damien and his family, Duke discovered something he had long forgotten—the warmth of trust and love. As bonds deepened and mysteries unraveled, he realized that his true desire lay not in realms and power, but in cherishing the one who had touched his heart.

The pact formed with this human, unbeknownst to Duke, unleashed a power beyond imagination. Their connection transcended the ordinary, revealing the profound meaning of another creature's trust. Duke was willing to go to extraordinary lengths to protect those he held so dear.