Without realizing that she had been reincarnated as a villainous lady, Duchess Estelle's engagement to the Crown Prince was broken off. She decided to live a modest life as a commoner from now on, and decided to work at a restaurant in a neighboring country. Six years later, she was running the restaurant while raising the late owner's twin daughters, Coco and Mia, but... Duke Frederick, who claims to be the twins' older brother, visits her, and she ends up pretending to be his lover to protect the twins from being embroiled in an inheritance dispute! A romantic fantasy about a fake engagement between a villainous lady who is at the mercy of a cold-hearted duke, unaware that she has been reincarnated into a game ♡ (Source: Ichijinsha, translated)

Estelle, once a noble duchess, is cast down to commoner status after the crown prince abruptly ends their engagement—unaware that she's been reincarnated as the villainess in a game. Determined to live quietly, she moves to a neighbouring country and begins working at a small restaurant. Six years later, Estelle is running the restaurant while raising Coco and Mia, the twin daughters of the late owner. Her peaceful life is upended when Duke Frederick, who claims to be the twins’ older brother, suddenly appears. To protect the girls from being caught in a bitter inheritance dispute, Estelle agrees to pose as his lover. Source: MU