The Demon Princess Grows stronger on My devotion

Orson grew up thinking he was just an ordinary servant boy living on a peaceful estate. What he never knew was that his parents were retired elite fighters, and that he was born with twice the mana of a normal human. ​When the Demon Army suddenly invades, Orson's world is destroyed. His parents reveal their hidden combat power and sacrifice their lives to protect him, but the estate is ruined. Left with nothing and buried under heavy war debts, Baron Alden is forced to sell Orson into servitude. ​Orson is bought by Crown Princess Adimas, the ruthless 20-year-old leader of the demon forces. ​Adimas demands absolute obedience, forcing Orson to his knees to serve her. However, neither of them expects the strange link between them: every time Orson bows and shows devotion, his massive mana feeds her power, while secretly letting him grow stronger in the shadows. Forced to wear a collar and obey the woman who destroyed his life, Orson plays the perfect servant—waiting for the day he can take back control.