Transmigrating as Guo Jia from the Start: The System Says I'm Dying Today

“Ding-dong~ Would you like to bind yourself to a System? All it takes is 20 years of your lifespan, and you can become a protagonist with a golden finger! If you embark on the path to immortality someday, what are a mere twenty years?”

“I want to bind myself to the System! It’s only twenty years of my life, and this is my chance to be the protagonist!”

“Ding-dong~ Binding successful. 20 years of your lifespan have been deducted!”

“Wait, who did I transmigrate into? How old am I this year?”

“Guo Jia, eighteen.”

“Ahhhhhhhhhhhhh?!”

Disclaimer: One female lead. There is a female lead.