I Quit Being the Perfect Lady. The Duke's Daughter Who Rewound Time Will Survive by Being Mean So Her Selfish Sister Doesn't Use Her Again!

Shukujo no Kagami Yamemashita. Toki wo Gyakkou shita Koushaku Reijou wa, Wagamama na Imouto ni Furimawasarenai you Seikaku Waruku Ikinobimasu!

淑女の鑑やめました。時を逆行した公爵令嬢は、わがままな妹に振り回されないよう性格悪く生き延びます！