After Being Turned into Cannon Fodder, I Married My Sworn Enemies.

Four people wore books to get married at a table, and all the actors pretended to be businessmen. The heroine transforms into a cannon fodder for a marriage, crushing the best relatives at the beginning, and controlling the husbands of three big bosses in the book, overturning the plot of the original book along the way, and transforming the life of cannon fodder into a king's life.