Book Transmigration: A Side Character Must Be Ruthless to Hold Her Ground

She transmigrates into the role of a supporting female character, only to be bullied and framed, and eventually have her whole family wiped out by the heroine. What can she do?

To stay alive, she has to keep her head down, but she also has System missions to complete. What now?

Fate gives her a lifeline: she unexpectedly opens up a side story with Sheng Rufeng as her shield, becomes the heroine's sworn sister, and turns the heroine's best friend into her own ally.

After surviving a brush with death, she chooses to leave their world behind. Then, five years later, she suddenly reappears with her son...