Gyakkou Akujo wa Yaru Koto ga Ou sugiru

Diana, the epitome of a noble lady, is sentenced to death for allegedly defaming Rachel, the beloved of her fiancé, Crown Prince August. As despair consumes her, a dainty girl whispers in her ear, “Thanks for playing the pathetic villainess ♡.” Though Diana is furious at being framed, it’s already t...

Source: MyAnimeList