The Unintentionally Ideal Adopted Daughter (2023)

Blurb:
Transmigrating into the main character of your favorite book sounds like a dream come true, but knowing Viola Vellatoux grows to be disappointed in her ending, Arin Han sets out to rewrite the story. However, her adoptive family will not hesitate to assassinate one another in their fight for control. The new Viola needs to use her wits to convince everyone that she has what it takes while remaining true to her goal. Further complicating her schemes, the male lead looks eerily familiar and has a strange effect on her when she gets too close.

Source: www.anisearch.com/manga/79196