In short, this is a slightly supernatural story that is an inhumane look at the drama of "deep sadomasochism":
After a bookmark absorbed the essence of the sun and the moon, the spiritual energy of heaven and earth, it finally transformed into a human form, and successfully traveled into a bloody sadomasochistic romance novel. For bookmarks, this novel is her three-dimensional world
Unfortunately, however, the character she dressed up happened to be the legendary second-in-command, cruel, ruthless, unreasonable and hateful female lead... What's even more unfortunate is that she was coerced by the God of Fate - the author of that book - and would have to continue causing at least 200,000 words of chaos between the male and female protagonists of the original book before she could return them a HE, otherwise her right to survive in the "three-dimensional world" would be ruthlessly deprived of her.
So, how should this bloody story develop...