A story about a spoiled boy who grew up without love from his parents, and after recalling his past life, he begins to pursue magic, eventually gaining recognition from the world. When he remembered his past life, the boy, a failure in a duke's family, made a resolution: 'I will research the strongest magic that can change the era! Everything else is irrelevant. It's all about magic studies!' However, the people around him do not leave him alone. Due to his notorious position as the duke's grandson, he ends up being forced to lead the noble faction and encounters a notorious serial killer in the capital. The boy's dream is fraught with difficulties!