Arifureta: From Commonplace to World’s Strongest (Light Novel), Vol. 11

At long last, Hajime has conquered all seven labyrinths and crafted a way home for himself. But as he and his friends leave the Frost Caverns, they find a massive army of apostles waiting for them. Leading the pack is Freid, and he's come to invite them to the Demon Lord's castle. Though Hajime is reluctant, Freid has taken his old classmates, as well as Myu, hostage. Left with no choice, he follows Freid to the seat of the demon empire's power. What new secrets will be waiting for him there, and will he able to survive the final game Ehit has prepared for him?