How to Reject My Obsessive Ex-Husband

(tome of writing: finished season 1)
On a pure story telling scale, it's mid. Someone said the novel makes more sense and I believe it. I'm not commenting on the story because I feel like I'm not the target audience... The ML is extremely toxic and obsessive, so title isn't exaggerating unlike some other manwha. At the very least, artist did a good job making me feel uncomfortable about the fl's dynamic with Ciel.
The world building is interesting, though.

This one of those stories that are so much better if you read the original novel before or alongside the manhwa. Understandably, in the manhwa, they have to cut out a lot of the inner thoughts and context found in the original novel otherwise it'd be too long. Ciel is an asshole, but you get to understand his 'reasons' more in the novel and Rin's reasons for rejecting him are better explained also