Sarah Brant was just a normal reader until she was suddenly reborn inside the world of her favorite romance novel! Her mission? Simple: become a background character—a humble maid—and ensure her favorite fictional couple gets their happily ever after. What could possibly go wrong?

A lot, actually. Sarah finds herself constantly walking on thin ice around Prince Leonard, the extremely fussy and demanding royal who seems intent on finding any reason to fire her. She's desperate to keep her job, not just for the wages, but because she needs a front-row seat to the novel's grand finale, where true love triumphs!

But as Sarah struggles to remain an invisible 'extra,' she finds herself unexpectedly close to the main drama—and maybe even the Prince himself. How can she ensure her beloved story unfolds exactly as it should when she keeps stumbling into the spotlight? And how long can she maintain her façade of being 'too pure for touch' when the romantic tension starts rising around her?

/ Alternatives: 순정의 의무