The World's Strongest Rearguard: Labyrinth Country's Novice Seeker Novel Volume 8 was written by Towa Akatsuki with illustrations by Huuka Kazabana.

Arihito and his party’s preparations for their ultimate battle against the Shining Simian Lord are going smoothly: They now possess an item that can lift Theresia’s curse, and Arihito recently obtained a new Hidden God power courtesy of Fylgja and her Intelligent Armor. But the curse is still slowly eating away at Theresia. To save her from this seemingly unbeatable foe, Arihito must join forces with his vast support system and the Guild Saviors!