Zeff Einstein spent his whole life mastering red magic and was finally recognized for it, yet a new spell that was soon created revealed that his talent for red magic was his lowest. Bitter at the thought of all his wasted effort, he creates a spell to send his old self back in time to his younger body and together with the determined "genius" mage Milly and the handsome swordswoman Claude, he intends to master magic more efficiently this time. (Source: /ak/ scans)

Kouritsuchuu Madoushi, Daini no Jinsei de Madou wo Kiwameru has been published digitally in English as Master Magic Efficiently by AlphaPolis through Alpha Manga. The volumes have also been published digitally by AlphaPolis since October 27, 2023.