Jiang Li was infamous in her sect and disliked by everyone. She had little cultivation, poor talent, an ugly face, and a volatile temperament. She often took out her anger on the little junior brother she had picked up, beating him until his skin was torn and bloody.
After dying once, she finally remembered that she was the vicious female side character in a book. She had ended up this way because the people she cherished had planted Gu worms in her.
Her beloved junior sister envied her beauty and good fortune, and planted a Gu worm in her. From then on, an ugly scar marred her face.
Her betrothed senior brother had fallen for someone else and despised her, so he planted a Gu worm in her. From then on, she became irritable and quick to anger.
Her respected uncle had secretly coveted the sect. After it changed hands, he turned her entire family into obedient puppets.
The only person she had truly wronged was her little junior brother, Qi Xiangyang, whom she had repeatedly hurt against her will after being infected by a Gu worm.
After Jiang Li was reborn, she turned completely dark and struck a deal with the cruel, bloodthirsty Demon Venerable who had destroyed her sect.
Her junior sister boasts of her beauty. The Demon Venerable says, "What an ugly thing. You look much more pleasing to the eye. Kill her."
Her senior brother protects his true love. The Demon Venerable says, "You adulterous pair, you deserve to die!"
When her martial uncle emerges from seclusion, the Demon Venerable goes straight at him with a sword.
Jiang Li: ...Could you stop stealing my job?
Later, the Demon Venerable is gravely wounded and falls off a cliff. In his delirium, he sees Jiang Li turning to leave and plaintively tugs at her sleeve. "Senior Sister, don't leave me. I'll go mad..."
Jiang Li: ???
Only then does she realize that her partner in crime, the Demon Venerable, is actually the pitiful little junior brother she used to bully.
Theme: Stay true to yourself, and retain the ability to think and judge independently.