My Lady, Please Become My Heroine!

After dying from overwork in her previous life, Beth finds herself in the world of a novel she was reading. She is reincarnated as an extra character, a maid in the house of the novel’s villain, the wicked Lady Claire. Yet, unlike what she had read in the novel, Claire’s situation seemed worse than what she imagined. Beth witnesses the pain a young Claire had to endure, being abused and locked up in a tower. Therefore, Beth decides to stop her from becoming the novel’s antagonist. Source: NU