After Conquering the Villain Boss, She Became the Group's Favorite

The Grand Master's Mansion is a loyal family that serves the country and the people, but they have raised an ambitious villain and the female partner of the boss. She wants to be the most noble woman and will not hesitate to destroy the whole family. What's even worse is that Gu Qingzhi accidentally traveled through time and became the woman in the book. Facing the ending she will experience in the future, she just wants to shout "I have a headache!" So she changed the outcome of herself and her family while having a headache, and accidentally became the group favorite. There is also a villain boss who has been working as a bodyguard by her side. Not only does he not like the original heroine, he also keeps staring at her with strange eyes. What do you want to do!