The aspiring first-class mages now face their second test: conquering the Ruins of the King's Tomb. A simple task, or so the proctor claims, but there's a reason this particular dungeon remains unexplored.

Due to the Spiegel, a legendary monster that can create perfect replicas of others, the test-takers who would conquer the Ruins of the King's Tomb must first face the ultimate enemy: themselves.

A perfect imitation of Frieren stands between the test-takers and victory, but Fern believes she knows how to win. Is it time for the student to surpass the master?

To defeat Spiegel, Frieren and Fern fight against Frieren's replica, but have a tough time. Meanwhile, Denken, Lavine, and the others fight against the replicas, but the magic of Sense, a first-class mage and the exam's proctor, rages.

As the first-class mage exam concludes and the test-takers go their separate ways, farewell leads to departure - but the next stage of Frieren's journey has only just begun.