The world is collapsing, I long for redemption

"A person who has no heart, how should he move forward?"
"If you need me, I will give my all."
"Beichen One-Sword Style is the strongest and invincible school!"
"I almost destroyed the world once..."
"You are saved, but will anyone come to save me?"
The purple-haired god couldn't grab that hand in the end.
—The world is saved, but what about her?
"Humans, if you have to sacrifice her to get back your smiles, then I will bring destruction to you!"
(ps: The introduction is weak, the plot is definitely not like this!)”