Rewriting Destiny (2022)

Both dramas start with the FL dying and then going back in time, determined to take control of her life and change her original fate, leading her to see the ML in a new light.

Both are set within the world of a historically set manga and start with the FL dying and then traveling back in time. At some point in the story (start vs. near the end), the FL becomes stuck in a time loop of a day.

Both have similar titles and are about the FL's life being controlled by a writer who makes her fate tragic.

Comic book
Author
Coming back into the story
Evil in previous story
Trying to become good
Having a fall out with other female characters
Escaping death
Being poisoned by husband

Both dramas begin with the ML killing the FL, then she is reborn/comes back to life. At first she fears the ML but over time falls in love, and the ML softens and falls for her as well.

Both dramas feature contract relationships (siblings vs. marriage) that turn into true love. The FLs are quirky and endearing, the MLs seemingly cold but very warm hearted. Both couples sell skin care products, and both are wrongfully blamed for causing allergies on the people who buy them. Both are light, fluffy historical romances.

Both dramas are set partially or entirely within the world of a comic.
....................................................................

Both are light historical romances with the couple falling in love after marriage. Both have cosmetics shops.

both female leads are killed
they both are reborn
coming from a strong famil
killed due to misubderstandings

Both dramas begin with the FL dying, then finding herself alive and back in the past, using her knowledge of what will happen to change her fate.

Both dramas are set within the world of a manga with a heroine trying to change the story.
..................................................................

Both are romance dramas in which the protagonists are manga characters.
.....................................................

Both are romance dramas in which the protagonists are manga characters.
.....................................................

Both are romance dramas in which the protagonists are manga characters.
.....................................................

Both dramas take place in the world of a manga with a self aware lead character.
............................................