The Heroine (s) are way too obsessed with the game and thinking it will follow canon no matter what.
Unfortunately for them, real life patches over the plot holes, so their narrow-mindedness is kinda ridiculous.
The author also likes to throw in plot twists here and there without any buildup so it's pretty confusing at times.
The ending is also a shitty attempt at drama and will leave you confused and frustrated.
Especially when you realise that the reason Fredericka went away quickly from the ball in the beginning wasn't because she was heartbroken, but embarrassed and panicked because her old sidestring panties have come undone and she's a minute away from losing them.
Which she did.
And then someone picked up.
There's a palace and royalty. But there's also a car? Probably modern fantasy?
This plays off later when the heroine tries to show off her harem and is smacked down by the MC's high spec older fiance.
Except, let's lift the curse with the power of LOVE!
Surprisingly, the MC isn't forced to have s*x with him to do this, a mutual love confession worked.
Firstly, many thanks to the translators, as the original author is apparently very bad at punctuation. Without them, this would be illegible.
Things take on the typical isekai speel here with a chapter of floundering, another of exploring the setting, then gaining a HAX item/skill, meeting a beautiful female and then to civilization we go!
For some reason, MC wants to become an Adventurer?
Then typical exploring the shops, beginner quest stuff happens.
The also-reincarnated bf is an idiot, who doesn't even realise he's an idiot for proposing to a modern woman that she should be his 2nd wife.
The first "friend" character we see is selfish, petty, and extremely 2D. Techniques of any kind back then were usually kept secret as they are the key to success. So you don't lightly ask for one.
This country has a French-ish feel. The King is called Rousseau. There's a movement for equality going on. The Otome game is called "Revolution".
Luckily no-one was guillotine'd but it was a close call.
Rejoice, for there is a Good End!