[Now serializing. This is a fictional setting and will not strictly follow historical events. The background differs from reality, so proceed with caution if that bothers you.]
Xia Zhu, a wage slave from the 21st century, woke up to find herself transformed into a cannon-fodder supporting female character in a novel set in a bygone era. Was it because she'd cursed the author the night before? She'd complained that the author had done nothing to portray the female character as wicked, yet kept tormenting her.
"Employee ID 1987. The transmigration-into-a-book System is at your service. Mission One: Go to the countryside. Sign up at the Educated Youth Office to volunteer for rural service and support agricultural development. Reward: five jin of pork and two jin of brown sugar, and access to a basic portable space."
The System's voice startled Xia Zhu. "What System? Why am I here? And what is this mission supposed to be?"
"What happened to my original body? Why did I end up here?"
"Your physical body was reduced to ashes in a gas explosion at your neighbor's home. Please accept the Host's condolences."
"What on earth is going on? How did I die? I have absolutely no memory of this!" Xia Zhu felt a wave of anxiety. She wanted to scream, but didn't dare let it show.
If the original owner's parents found out that someone else had taken over their daughter's body, wouldn't they think she was crazy? Xia Zhu's mind was a complete mess. She shook her head and forced herself to calm down, quickly scanning everything around her.
This wasn't a dream, and she wasn't reading a story in a book.
She really had transmigrated, and there was no going back. She had transmigrated into a book and become its cannon-fodder supporting female character.