Is it wrong to try to pick up girls in a dungeon? / ?mori, Fujino

"Aiz is stronger than ever, but she has never been more restless. The blackrobed 'client' who lured Lulune Louie into a dangerous job is roping in the Sword Princess with a quest she can't refuse. She knows full well how wary she should be, considering this person's last job ended in an adventurer's brutal murder, monsters attacking Rivira, and Aiz's battle with a distressing monster tamer who confronted her with a name no stranger should know. But when she is offered clues that could lead to revealing her new enemy's identity, Aiz launches herself headfirst into the Dungeon--alone. Loki Familia is quick to chase after their idol once they find out what she's up to, but nothing can prepare them for the incomprehensible dangers lying in wait for them"--Back cover.

"Thanks to Aiz and crew, the tumultuous events of Monsterphilia ended without incident, and Loki Familia is finally able to relax--but only for a moment. Soon, they find themselves embroiled in a suspicious case of murder. As they begin to investigate, the ladies soon realize that they're getting involved with a killer that's more horrifying than they thought... In the midst of all this, they find a mysterious jewel that may connect to everything else. These events taking place above and below the surface will rock Orario to its core as the darkness lurking in the city bursts forth!"--Back cover.

"After the massive battle that took place on the fifty-ninth floor, Loki Familia embarks on a triumphant return to the surface only to be interrupted by the appearance of an Irregular that forces them to make camp on the eighteenth floor. There, Aiz unexpectedly stumbles upon the unconscious form of a familiar white-haired boy, who a certain young elf couldn't be less excited to see. The other members of her familia are curious about him, hoping to find out more about the fastest-growing adventurer in history, but Lefiya has other ideas"--Back cover.