The Mage Will Master Magic Efficiently in His Second Life

A brief description of the manga The Mage Will Master Magic Efficiently in His Second Life:

Zeff Einstein spent his entire life mastering red magic after which he received recognition in this matter.

However, demonstrating a new spell, he soon realized that his talent in red magic was not as high as he would like.

The thought that he had wasted a lot of time studying red magic made it hurt and bitter.

Realizing this, he creates a spell to send his old self back to the past.

There, he, along with the determined sorceress Millie and the swordsman Claudi, intends to cope with magic more effectively.