Story
When Su-A wakes up inside the world of her favorite novel as the character of Blair, she is determined to help the female protagonist, Chloe, get through the darkest period of her life. For years, Chloe has had to endure discrimination and abuse for being an illegitimate child. Blair becomes her maid and confidante, and the two form a special friendship. But Chloe turns out to be quite a different character than the one described in the book. She wields black magic, sends Blair to fetch her mysterious potions, and seems totally uninterested in any of the male lead candidates.
Synopsis via AniList (English).