is a Japanese manga series written and illustrated by Nekotarou. It began serialization in Akita Shoten's digital manga magazine Dokodemo Young Champion in August 2022.
Natori Midori is a temporary worker who puts a lot of effort into everything she does. One day, the company that she had been working at for three years abruptly terminates her contract. Feeling depressed and wondering if there will ever be a job she can dedicate herself to, Natori opens a mobile game that she had been playing, only to be magically summoned into its fictional world. She lands beside the person who summoned her: Lapis Tenebrae, a cruel and ruthless villainess who betrays the game's protagonist. In a desperate situation, Natori pretends that her knowledge of the game's plot is a clairvoyant psychic ability, and uses it to help Lapis avoid the danger that was about to befall her. As a result, Lapis takes a liking to Natori, and she begins working as Lapis' secretary. In addition to navigating her secretarial duties, Natori begins to see another side of Lapis, and dedicates herself to saving Lapis from a plot-mandated death.
Written and illustrated by Nekotarou, The Fed-Up Office Lady Wants to Serve the Villainess began serialization on Akita Shoten's digital manga magazine Dokodemo Young Champion on August 23, 2022. Its chapters have been collected into five volumes as of October 2025.
On February 12, 2025, Seven Seas Entertainment announced that they had licensed the series for English publication beginning in August 2025.
The series was nominated for the ninth Next Manga Awards in the web category.