The Magic in this Other World is Too Far Behind!, Volume 6 (The Magic in this Other World is Too Far Behind! #26-30)

Suimei and Lefille settle down in Filas Philia in hopes of actually getting some research done at the imperial library, but little do they know of the dark secrets haunting the capital's streets. A series of strange incidents has all of Filas Philia on guard, and Suimei may unwittingly be sticking his nose right in the thick of it. The more immediate threat, however, comes in the form of a boy named Elliot... who is threatening to take Lefille away by divine order of the Goddess!