The World's Strongest Rearguard: Labyrinth Country's Novice Seeker, Vol. 6 (manga)

Just as Arihito and his party are in the midst of quelling a stampede, a giant monster capable of overpowering his support and defense skills appears. With civilians to protect and a formidable foe to defeat, Arihito fears his luck has finally run out. Yet when all hope seems lost, one Hidden God's powers will manifest and flip the battle on its head...