Hanzai Meikyuu Angel no Nandai Kishi (Volume)

is the first volume of the Hanzai Meikyuu Angel no Nandai Kishi light novel series, written by Orio Kawaishi and Illustrated by Cut. It was released under the Dengeki Bunko Imprint in January 2021.

Synopsis
A labyrinth knight who cracks down on crimes in the dungeon. I think that the newly assigned Ratla is an elite-oriented and highly prideful new female knight ... The true figure was a ponkotsu rookie with a habit of withdrawal! However, the veteran knight Cardo, who has just launched the scene, discovers her hidden talent and the heart of justice. "I want to be a ally of justice ...!" "Believe me. I'll take care of you until the end so that you can carry on your dreams." A serial murder aimed at an adventurer that occurs in the dungeon while gradually trusting each other. A girl who buys and sells illegal drugs and pursues a mysterious demon beast. A dungeon police fantasy is dispatched to confront a difficult case of "entering a labyrinth" class! !!

(source: Dengeki Bunko Official Website - Translated)