If you're looking for manga similar to Saikyou no Kurokishi, Sentou Maid ni Tenshoku Shimashita, you might like these titles.
The previous lords have committed as many atrocities as possible to fill their bellies. I, the only daughter of that house, had discovered that my servant and lover was a spy. And as the people wanted, my life ended with my execution. However, with the memory of getting beheaded intact, I began a new life. I was planning to shoulder the sins of my past life and become a nun, but by some trick of fate, I came to work as a maid for the current lord. Under my former lover, whose name, age and even hair colour were all lies.
Lucille was recently fired from her job as a maid after an adultery scandal. This is her re-employment life story with a silent unfriendly magician in a quiet town, away from the scandals.
Due to a crime she committed in her past life, Alicia is destined to reincarnate and live unfortunately. Reincarnating again and again, she realizes that doing good deeds will improve the conditions of her next life. To accumulate virtues in her current life, Alicia becomes a hardworking maid at a castle. Inventing things with the knowledge she commands from her past life to solve problems throughout the castle, she gets approached with a variety of worries?!
Lulu, the daughter of a poor merchant, became the maid of the Marquis to pay off her debts. The head of the family, Gerald, seems to be an elite noble admired by the ladies, but in front of my childhood friend, I don't like him! I'll quit being a maid as soon as I can! ……While I was working feverishly, I was asked to sleep with him who said "Be honest and be pampered by me." Is that the job of a maid!?
18 year old Aoi Wakatsuki works as a maid in a huge Kyoto mansion for the wealthy Sengoku family. What others are not aware of is that Aoi is actually working undercover to investigate the death of a former Sengoku maid. Her death was initially ruled a suicide with a suicide note left behind confessing she broke a priceless vase.Inspector Kaido isn't convinced the maid committed suicide, especially with the Sengoku family refusing to cooperate. Inspector Kaido then employs his own maid Aoi Wakatsuki to work for the Sengoku family and uncover the truth.
Reid, a young hero with the strongest physical strength, and Elria, a beautiful sage with the strongest magic prowess. They continued to fight as rivals in opposing enemy nations, but their relationship came to an end with the sudden death of Elria…Then, a thousand years later, reincarnated in a world where magic reigns supreme, but he who has retained the strongest physical strength from his previous life, Reid, was reunited with Elria, who has also been reincarnated ――
Connie Ville, the overly versatile maid of Halbion Castle, who does everything from cooking, washing, and cleaning to combat and espionage, is a simple girl who wants a modest and solid life despite her special abilities. One day, however, she learns that Leinhardt, the famous womanizer and a very beautiful knight, has become her brother-in-law! Involving her flirtatious brother-in-law, her capable and handsome boss, and even the beautiful second prince, Connie, a withered girl, is involved in work, battle, espionage, and love (?)!
An ever-righteous and sword-loving high schooler, Fujinomiya Soujirou is fatally stabbed by a robber during a home invasion. However, on the crossroads between life and death, "God" asks him if he wants to live a little longer. Clutching one of his prized swords, Soujirou agrees to a (cheatless) new life. Sent to another world, his only possessions are a talking sword "Hotarumaru" and the sword that took his life, "Sakura". He is also given the job title of "Cursed Sword Master", granting him the ability to bring out the "personality" of a sword. With a new realm of possibilities laid out before him, he sets forth on a journey to raise a harem of katanas, while begrudgingly hunting monsters and helping those in need.