Uranus, a great warrior of the brave party who once saved the world. After 300 years, he reincarnated as the son of a local lord, Egil-remaining his level and status. In the previous life, he was a warrior, but in this world, he decided to enroll in the Hero Academy in order to become a court magician expected by his parents. With the overwhelming stats he inherited during his reincarnation, Egil easily breaks through the exam. Then, although it was a guided dormitory, it turned out that Shannon, who was in the same room as the dormitory, was actually a girl dressed as a man. In addition, Shannon is the brave Luka who once fought with him-- !? Reincarnation battle fantasy, the opening of the strongest magician (physics)!