Making magic circles/formulas essentially software coding was creative of the author.

Also, regarding the "makeover, " it's not like FL actually underwent a full transformation. Her "fluffy" hair was just unbrushed and messy in order to cover her face (she doesn't have curly hair), and she wore glasses even though she didn't need them (she has no sight issues) ; both because this was how she was raised to 1) serve as a foil to her sister, 2) hide her after she was trafficked/adopted. I understand that we're tired of the "makeover" trope, but this actually served a purpose for her, as she is almost instantly recognized by her grandfather pretty early on (around 1/4 of the way in)

Which by the way that claim is just a strong hunch because of the ham-fisted foreshadowing: 1) FL is super maltreated compared to her sister for NO reason, 2) we were informed that the recurring character of many noble titles has a kidnapped granddaughter, 3) the FL's father seems to be involved in trafficking, or at least with the same organization that trafficked her, 4) the noble grandpa thought FL was his granddaughter, but her eye color is off (but it's a magic world, so... yea), 5) the masochistic cousin's heart and body instinctively recognizes her though his mind hasn't caught up.

Edit: 6) I totally forgot but there was a fortune teller who's actually a divine beast that was mentioned super early on and circled back to around halfway in that perfectly describes FL's living situation that we as reader's would be privy to. There is absolutely no subtlty.

Of course there was a fake/imposter arc, but it felt super short and wasn't impactful/emotional because the cousin and grandfather just didn't really care/believe the imposter and loved the FL so much, so they didn't care when the fake/imposter was revealed. And of course we found out the FL was adopted (what?! noooooooooo) ; can't remember if this was before or at the climax of the fake/imposter arc. Anywho her family's in jail, or at least her parents are, and she's keeping/adopting the fortune teller divine beast. Neato

FL's hair color change and it's not a "personal hygiene" thing. It goes from black to chestnut. I guess the author couldn't decide.

1. FL is your typical character being oppressed from her family and lover who regressed twice and because she regained her first life memories living as a workaholic woman she became a super confident and cunning woman who now thinks of everyone as a pawn for her plans to have her own most expensive house.

2. When she drank the truth serum how come she was able to omit the part where she regressed twice when she was interrogated as to how come she knew the magic formula. In the early chapter where the Duke gave the witness a truth serum regarding Diana's disappearance he straight up told everything but for some reason FL was able to dodge it? Like isn't that I dunno biased from the author?