Taishou Migawari Kon: Konpeitou wa Amaku Hodokete

"I don't have time for you. Don't get in my way." Fujishima Yukiko, the daughter of Fujishima Kisen, is the child of a mistress, so her stepmother and sister treat her like a maid. Her father, who only sees her as a political tool, plans to marry off Yukiko to Hiratsuka Takaya, the president of Hiratsuka Spinning, in place of her sister, Marie. Yukiko is confused about being married off to someone she doesn't even know. Moreover, Takaya is a workaholic and doesn't seem to be interested in being a wife. Nevertheless, Takaya is gradually drawn to Yukiko, who tries her best to fulfill her duties as a wife.

(Source: Mecha Comic, translated)