Light Novel: Volume 6

Summary
Asked by the Duke of Harz to participate in the subjugation of the labyrinth in his territory, Michio Kaga visits the labyrinths of the Harz Duchy and decides to enter the labyrinth of Tare. Michio activates a new magic that he hasn't used yet. Once again acknowledging the strength of the monsters on the upper floor, Michio changes his weapons. He immediately goes upstairs to test the equipment, but there he is attacked by bandits. On the other hand, Michio, who kept selling mirrors to the Duke, was also buying and selling amber, earning a large profit from a series of trades. Money in hand, he visits a new slave trader. There, Michio meets a cat-eared girl named Miria and adds her to the party.