The story follows Shin Wolford, a young man who was originally from Japan, but who was reborn with his memories intact in a magical world, where he was adopted and raised as the grandson of the great sage Merlin Wolford.
Morikawa plays Oliver Schtrom, a defector from the Empire who now works as a teacher in a secondary education academy.
The original Kenja no Mago light novels are published in Japan by Enterbrain (a division of Kadokawa) under their Famitsu Bunko imprint.