This story is also known as The Saint Who Sacrificed Herself to Save the World
Blurb:
Xu Jiaojiao was reborn and bound to a System called "Universal Salvation."
The System told her: "Do good deeds and earn points! The rewards are amazing!"
These points were incredibly useful. She could buy anything she wanted with them.
So Xu Jiaojiao smiled at everyone she met, freely sharing her kindness. She exchanged the points she earned for countless riches and unparalleled beauty.
Just as she thought she was on her way to the top, the sudden apocalypse reminded her that she was actually a cannon-fodder character in a male-oriented, power-progression apocalypse novel!
The kind who gets shoved into a horde of zombies at the start and eaten until not even a scrap of bone remains!
The wealth and status she had once been proud of became a pile of worthless paper, while her breathtaking beauty turned into a death warrant.
To survive, Xu Jiaojiao tearfully spent the few points she'd saved before the apocalypse on "super strength." While the ability users were still growing stronger in the early days of the apocalypse, she pretended to be a powerful figure nobody should mess with. Then she did good deeds like crazy, racked up points like crazy, and exchanged them for even more "super strength"...
By the time the man destined to reach the peak of the apocalypse and become a kingly figure finally found Xu Jiaojiao after countless trials, he wanted to pull her into his arms and cherish her. He was about to say, "Jiaojiao, from now on, I'll protect..."
Then he saw the woman he had been longing for. She had become the lord of a city, with thousands of loyal subordinates who were devoted to her.
She also had plenty of rivals in love, lurking around Xu Jiaojiao like hungry wolves, just waiting for a chance to take his place.
The man: "..."
I'm too late. My wife doesn't need me anymore. What do I do?
After a long moment of thought, the man smiled darkly. "If this world has stolen my wife's attention, then I'll destroy it. That way, she'll only have eyes for me!"
Xu Jiaojiao: "Wait, don't get worked up!"
-----Blurb 2.0-------
Xiao Qiao was born into a wealthy family, but his mother was a mistress. She had no ability but loved money, and after abandoning him at the main family home, she took her severance payment and never came back.
He was unlucky. At six, he fell down the stairs and became a cripple, a useless person who suffered endless humiliation.
Just when he thought his life had nothing left but darkness, he unexpectedly met the light of his life.
From then on, warmth filled his heart, and all he could see was that girl.
Sadly, the girl seemed to be kind to everyone. He wasn't the only one in her heart: the whole world was there, too.
He was consumed by jealousy toward everyone else, and when the apocalypse arrived, his overwhelming fury rose to his throat.
His body mutated, and he was able to stand. With a trembling heart, he quietly approached the girl.
All so he could have her all to himself!
Xiao Qiao: "Everyone who tries to steal her attention has to disappear!"
Xu Jiaojiao: "..." I spend every day stopping the male lead from destroying the world. This is so hard!
At the very end.
Xu Jiaojiao was held in the man's arms as the System in her mind spoke mechanically: "Host has achieved the ultimate goal of 'saving the world.'"
Though the price was herself.
Note: 1. The leads are each other's first love.
2. The male lead is dangerous, prone to overthinking, and good at talking himself into things.
3. The male lead doesn't stand up until fairly late in the story.
4. The heroine is a "fake saint."
Theme: Study hard and improve every day.