Bannou Jochuu Connie Wille

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 (?)! Source: MU