My Daughter-In-Law Is a Little Busy

He accidentally returned to an imaginary era and took over the body of an already smart girl. Facing the difficulties that are coming one after another, the emperor who is obedient and unwilling to give in, the prince who has ulterior motives, the mysterious prince, the seventh prince with a temperament, the sister who hates because of love and the femme fatales... Let's see how she copes as a modern person! Meeting a true lover was a misunderstanding over and over again. When the lovers finally got married, they unexpectedly discovered that one of their friends, a guy who was also a boy, had been coveting her husband. Is this a breakup? Or lead him to the right direction? Faced with the difficult and mean sister-in-law, and the sister-in-law who is jealous for no reason, should she remain calm, or should she let him go? The life of the ancients was so lively day by day!