(The end of the world + rebirth + upgrade + strength + siblings)
In her previous life, Lu Qiao was obedient and died miserably at the hands of monsters; when she returned to the beginning of the apocalypse, she vowed that she would never move forward again in this life and started on the road to crazy monster killing and upgrading.
One day, she accidentally saved a man. After clearing his name, Lu Qiao was horrified to discover that this man was a cold-blooded and ruthless super boss in the late post-apocalypse, who was famous and looked up to by everyone.
After her rebirth, she just wanted to be an emotionless demon-killing machine, and the boss was there to worship her.
But that person always cooked a good meal and followed her silently to protect him.
The male protagonist is miserable and has been abused since childhood; the female protagonist has no golden fingers and is independent and self-reliant.