I Became the Fiancé of a Duke’s Daughter, but Rumor Has It She Has a Terrible Personality and Is Ten Years Older Than Me

Jared Murphy is the eldest son of a baron, but since he cannot inherit the title, he is destined to become a commoner in two years. However, to Jared, being a mage matters far more than being a noble. Gifted with multiple magical affinities, he has spent his student years hunting magical beasts, eventually earning a place as a candidate for the Royal Court Mages—an elite group responsible for defending the kingdom. Then one day, an engagement proposal arrives: he is to marry Olivier, the daughter of a prestigious duke. Drawn by the rumors surrounding her, he travels to meet her. Their first meeting is a disaster, but after seeing an unexpected side of her, everything begins to change... A battle fantasy about a young mage and a misunderstood young woman as they grow closer while facing one challenge after another!