Twisted Fate of the Knight

A story of a student who was reborn into the book that she make fun of it because it is so lame and cringe. But the problem is she was reborn as a baby in the world of a book of fantasy? royalties? historical?

She was disguised as a man to conceal her identity because the day she was reborn the empire kill all the babies.

Will she survive?

in the world of a novel?