Project to become a maid's princess

Seoyeon, the maid who serves the young lady, and lives with her. Even though she's a maid, the young lady has a good and upright heart, so her work isn't particularly difficult. No, she's incredibly grateful that she's allowed to serve the young lady. But then the young lady suddenly asks her a favor: "Please, Yeon-ah... You know very well that I can only trust you..." "Ah...young lady..." Her {unintentional} love story of social ascent! "I can't...get caught, right?"