The Eminence in Shadow, Vol. 4 (Manga)

Cid is invited to Lindwurm, the Sacred Land, where a ritual known as the Goddess’s Trial is held. Ancient warriors are summoned according to the strength of the challenger, providing an opportunity for honor and glory—all the normie stuff Cid specifically wants to avoid! If his true strength is revealed, all his work to play the part of a nobody will be for naught...