I’ve Transmigrated into a Book, So Who’s Going to Be the Supporting Heroine?

[Transmigrate into a book + ensemble cast tragedy + wish fulfillment + strong female lead + mutual salvation]

Struggling online novelist Mu Ci unexpectedly transmigrates into her own novel.

She originally hoped to change the story's ending through her own efforts, but eventually discovers that even as Shen Mengli, standing at the very beginning of the story, she cannot change the fate of everyone dying.