Alfred Crimmin, an elven man once renowned as the world's strongest Great Sage.

Before the world's end, in order to save the World Tree (Yggdrasil) which he had served for 360 years.

He returned 3000 years into the past and reincarnated as a human girl named Tiarina Franks.

However, magic does not exist in this past world.

To save the World Tree (Yggdrasil), she chooses the path of becoming a swordswoman.

Alfred, devoid of even the slightest emotion, finally discovered exhilaration on the battlefield.

Ultimately, she became the 'Crimson Sword Princess' whose legend would be etched into history.