I get the feeling that the FL was an obsessive fan of the book and transmigrated late because our lovely lady changed the course of things. Soooo now she is super pissed off because she won't get her dream boy who she is "supposed" to be with.
MAJOR SPOILER:
No she’s the actual Ella from the novel, she got locked up (the people suggested much worse but since Kahir loves her she only got locked up, and not even in prison I think it was tower or something) because of her despicable acts towards other people including Kahir (she was really toxic). She then got another chance to relive her life and she decided that she’d correct all her mistakes but Rosaline was already there beside Kahir (which didn’t happen in the ‘original novel’) and he doesn’t seem interested in her either unlike before so thats probably why she noticed quickly that she’s possessed.
ANOTHER SPOILER:
She’s also in possession of the book that Rosaline has from what I remember
Why are people posting webtoons that are free from the source? You can find this on the site or app called Webtoon. If you read it there the author will get paid.
It is on there. I am in the UK and it is listed as "Your Throne" and fully translated.
https://m.webtoons.com/en/fantasy/your-throne/list?title_no=2009
it's on Korean WEBTOON (naver webtoon, the original publishing platform). Naver are the company who owned line and webtoon app. their main competitors are kakaopage (owned by kakao corp, which also bought daum webtoon) and ridi corps (ridibooks, where we can buy delicious smut novels lol).
Naver expands WEBTOON app overseas and using regional approach in one app (that's why we can jump region in webtoon), while kakaopage using more restricted move (each region has their own app like indonesia & thailand), and also has some of their releases in t4p45 and T4PpYtoOn. ridi corp launched manta, official subscription based app.
I bet Chas guy is the dealer they are after.