ariadneofamnesia
Lily already knows how her story will end.
She's the childhood friend, commonly dubbed by readers as the "losing heroine", who gets left behind, forgotten by the end of the story.
After recovering from a fever, Lily regains memories of her past life and realizes the truth: she's living inside a novel. And in that story, her best friend, Sol, is destined to become a hero, leave the village, and fall in love with someone else.
Knowing her fate, she becomes determined to change her destiny.
She'll leave first before he can. She refuses to become a losing heroine!
...
So why does the hero keep on clinging to her?
"If I leave first.. then I won't be the one who gets abandoned, right?"
If only it could be that easy.