After being reborn in a new world, the renowned sage Ephthal dedicated his life to studying magic. Despite his aspirations to master magic completely, he faced the harsh reality of his limitations and succumbed to despair, ending his chapter. Four centuries later, he is reincarnated once more and joins a magic school, armed with the wisdom and spells from his past life. Mocking the weakened state of magic after centuries of decline, he effortlessly wields ancient magic of legendary caliber, asserting his dominance over a world that now bows before his unmatched might.