Ane wa Mahou mo Tsukaenaikara, Boku ga Namami de Sekai wo Sukuu. (Volume)

is the first volume of the Ane wa Mahou mo Tsukaenaikara, Boku ga Namami de Sekai wo Sukuu. light novel series, written by Sasayama Plus and Illustrated by ryuu.. It was released under the Dengeki Bunko Imprint in March 2018.

Synopsis
"Ane, I won't forgive a magical girl!" A distorted love story of a poor sister and an overprotective younger brother. The turning point came to my sister Pear, who left her brother Ringo to everything from cooking to bathing and choosing underwear. When Ringo took her eyes off, she was tempted by a small animal (a cheeky hamster) to sign a contract to become a magical girl. "Please, Ringo-kun. Magical girl, can I do it?" "Oh shit, stop it.'Saving the world' is not a joke--" Although he was timid, he couldn't play a big role in saving the world by defeating the approaching monsters to his sister who was just a good ambition. Then what should I do? In conclusion, her younger brother has no choice but to physically defeat the enemy on behalf of her sister .... This is a distorted love story of an unsuccessful older sister and an overprotective younger brother.

(source: Dengeki Bunko Official Website - Translated)