Yeoju Eommawa Namju Appaga Gyeolhonhaetda

Kim Yoon, who was at the height of her success as the top makeup artist, died from overwork. She was given a second chance to enter the world of her favorite novel La Vie en Rose, however, her luck took a turn for the worse as she ended up inhabiting the body of Calypso Partuan, the cruel stepmother who tormented Coral in the original story. Kim Yoon tries to regain her senses and live well with Coral, but she receives a letter proposing a marriage contract from the second prince of the empire, Macaron. Not only did she never agree to such a contract, and to make matters worse, Macaron was the father of the male lead, Kai! Coral was supposed to marry Kai, but now she was going to marry Kai's father?! This is a family project between people who are not related by blood at all!

(Source: KakaoPage, translated)