Koushakuka wa Gikei ga Tsugeba Ii: Ponkotsu Reijou no Akujo Keikaku

“For my dear stepbrother… starting today, I’ll become a villainess!” Adele, the daughter of a ducal family, has long harbored a quiet affection for her stoic stepbrother, Edward. But just before her debut into high society, she learns a shocking truth: for Edward to inherit the dukedom, he must marry her. —That kind of engagement… it would be too cruel for him! Thus, Adele hatches a ridiculous but heartfelt scheme: Villainess Plan: Become a selfish, scandalous villainess Get herself disowned from the family Break off the engagement so Edward can become the next Duke! As Adele—a hopelessly clumsy noble lady—throws herself into her villainess role out of love, things take an unexpected turn… and a love triangle with the crown prince begins!? A glamorous, chaotic romantic comedy of crossed wires and noble intentions begins! [Web Novel](https://ncode.syosetu.com/n7009gs/) [Web Manga](https://www.cmoa.jp/title/310838/)