A spoiled boy, unloved by his parents, rediscovers his past life and dedicates himself to the pursuit of magic, eventually gaining world recognition. Upon remembering his past life, the neglected son of a Duke makes a resolution: "I will research the strongest magic to change the era! I don't care about anything else. It's all about magic!" However, those around him won't leave him alone. Due to his status as the infamous Duke's grandson, he's unexpectedly made the leader of the noble faction and encounters a vicious serial killer who is disturbing the capital. The boy's dream is fraught with difficulties!