The World's Strongest Rearguard: Labyrinth Country's Novice Seeker Novel Volume 7 was written by Towa Akatsuki with illustrations by Huuka Kazabana.

Arihito faced off against the Shining Simian Lord in District Five and successfully rescued Elitia, but the curse this horrible beast inflicted on Theresia is destroying her bit by bit. In order to save his companions and defeat the Simian Lord, Arihito must seek a new power!