I Became the Duke's Male Servant

In the original story, Roselia was a maid in the duke's household, used as a mere pawn in his schemes before being executed by the crown prince after being framed as a traitor. But this Roselia is different. The heroine, now in the body of the doomed maid from the novel and fully aware of how the story ends, is determined to change Roselia's fate—disguising herself as a man to avoid the duke's attention. But wait... why is she still being taken?! Somehow, Roselia still ends up in the duke's estate—not as a maid, but as a manservant!

(Source: Webtoon Entertainment)