Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 13 (light novel) — Fujino Omori

Bad news arrives in the rest-stop town of Rivira on the 18th floor: someone has been murdered. The prime suspect is Gale Wind, the blacklisted fugitive with a bounty on her head. Bell and his companions can't believe their ears. But as they are preparing to pursue her in order to clear her from suspicion, Cassandra has a terrible precognitive dream. It contains seventeen prophecies-and if it comes true, the people she cares for most are fated to die. Overcome with despair, the prophetess of tragedy begins a solitary battle against ruin. Meanwhile, Bell searches for the truth about Lyu. Yet when he finally encounters the elf, whose heart burns with the black flames of vengeance, unprecedented calamity lets out its newborn cry!