This Was the Only Way the Magical Girls Found to Save the World (魔法少女が平和をまもる方法を探したけどこれしか見つからなかった件)
Author: Amato Yuki (天戸祐輝)
Illustrator: Suzunone Rena (鈴音れな)
Published by: 2D Dream Novels (二次元ドリームノベルズ)
Release Date: 8/30/2019
A rich girl and her maid are recruited as magical girls, but it turns out they were recruited for the team that prevents the creation of future lust monsters by having sex with anyone on the verge of becoming one. The main girl is too stubborn to back down after agreeing to help, so they are stuck working as lewd magical girls. During their work, they keep running into a certain boy from their school and become acquainted with another girl who has been a lewd magical girl longer than them.