I saw their family tree in spoiler forum.. it was confusing till the end.
https://forum.novelupdates.com/threads/i-will-make-an-effort-to-change-the-genre.110458/page-5#post-6286066
U can scroll a little in this page, there would be a picture.
This is dragged out too long i need spoilers n be done with it.
If based on the Guidebook of Cliche-- I suppose the prince will find out who Marie is, and will eventually end up with her after sum up n down. Rachel? She's impossible cuz she has sum kinda sus relationship/deal with the king/chancellor from the West(West? Dun rmmbr but he's that man who suspected tht Marie is Princess Cloyan)
I really hope that happens, don't wanna read the route of destruction ╥﹏╥, for the sake of her family to regain their status or something like that, Rachel is allies with the crown prince's enemy, the enemy is using Rachel to get to his goal which is conquering the crown prince's empire, that's why if the crown prince got married to Rachel, there will be war I think
Does the chapter rly ended there?
there is another half but these translators love only showing half of it
Specifically kunmanga