Kouritsuchuu Madoushi, Daini no Jinsei de Madou wo Kiwameru

Zeff Einstein dedicated his entire life to the rigorous study and mastery of red magic, eventually earning widespread recognition for his relentless efforts. However, his hard-won triumph was short-lived. The sudden invention of a groundbreaking new spell exposed a devastating truth: his natural aptitude for red magic was, in fact, his weakest attribute. Crushed by the bitter realization that decades of grueling work had been fundamentally inefficient, Zeff refused to let his life's dedication end in quiet despair. Driven by regret and armed with unparalleled magical knowledge, Zeff engineered a powerful temporal spell designed to cast his consciousness back through time. Awakening once more within his younger body, he is granted an unprecedented opportunity to reshape his destiny. This time, he intends to approach the arcane arts with flawless precision, maximizing his true potential from the very beginning. He will not undertake this second journey alone. Joined by Milly, a fiercely determined mage hailed as a genius, and Claude, a strikingly handsome swordswoman, Zeff forms an unlikely but formidable alliance. Together, this trio sets out to navigate the complexities of their world, ensuring that Zeff’s pursuit of ultimate magical mastery unfolds far more efficiently than it ever did in his first life.