Responses
Yes. It is actually obvious just looking at the visuals.
The black haired emotionally unavaible cold overpowered tsundere with a dark sad past.
And it is an already overused trope: The boyfriend, the fiance or husband refuse a separation either due illogical thinking, sudden toxic love or due to a complicated big scheme...

I ve read the translated novel and the prince keeps stalking her no matter what she does or says to him.
It became so absurd and stupid that he became automatically more and more obsessed with her. "I want her I want her I want her...."
The deer boy is the son of the emperor who killed her and her past comrades in her previous life.
She saves that asshole (operation disease) because of the deer boy...
And her ML is superior than her because he has the only power to break her curse and kill gods/deities... Is practically a chosen one.
Every three of them don't accept NO from her and keeps bothering her...
Yes, she is a Mary Sue who can only be saved by the ML...