[Light Novel] I'm pregnant before the heroine arrives, but it seems to be different (one book)

Publisher: Futabasha
Author: Rose, Mochizuki Haruka
Size: 128mm x 188mm
Number of books: 1
Language: Japanese
Category: Light novel
Latest release date: 2023-12-08

Synopsis:
Ferry Romannah, the Duke, fostered love with Muze Lambest, the fiancee, the fiancee.
But suddenly, the ferry notices that this is the world of maiden games, and that she is a villain daughter.
Moreover, Muse is the best of the previous life!
However, as the game scenario, the heroine Rilin has been transferred to the school.
The villain daughters will be happy because they are beloved by their fiancee!?
The story of a villain daughter whose fate changes drastically due to pregnancy.