Both are mini dramas in which the FL is out for revenge against a husband or boyfriend who wronged her.
..................................................
Both are mini dramas in which the FL suffers betrayal and set back, and then returns with a plot for revenge or changing her life. Both FLs are assisted by a different man from their original boyfriend, and along the way the two fall in love.
Both are mini dramas in which the FL is out for revenge against a husband or boyfriend who wronged her.
..................................................
Both are mini dramas centered around a revenge plot by the FL(s). Both FLs have knowledge of what will happen (through premonitions vs. time travel) and use it to their advantage.
Both are mini dramas in which the FL is betrayed and murdered, then finds herself alive back in the past, using her knowledge of what will happen to take revenge and stay alive.