Quick Transmigration: The Tool-Woman Supporting Character Quits

Tu Mingming was a quick transmigration agent working for the "Stepping Stone" System. To save her younger sister, she diligently played the stepping stone for the protagonists of each world.

To help a protagonist level up, she lost her family and home. To keep one safe, she died alongside the antagonist. When a protagonist wanted a harem, she helped gather one...

As long as she could save her sister's life, she had no selfhood at all, living like a mere tool.

But her sister still died.

That day, Tu Mingming completely turned dark.

The Heavenly Dao had laid out a set path for her, its tool, but she was determined to defy Heaven!