A chuuni heroine who has lived for a thousand years and fears nothing VS a scheming, two-faced hero in modern society
Su Mu: Sis, don't you have a really impressive machine gun? If that doesn't work, bring out your broadsword!
Song Wen: Sis? Who are you calling sis?
One nap somehow lasted a whole century. The once-mighty demoness is now left with no followers and barely a penny to her name.
No matter. She can still make a little money on the side, like changing people's fate...
Then she drank too much and messed it up. Su Mu was supposed to become a peerless genius, but instead turned into a spoiled rich kid, lost his destined romance, and had his lifespan cut short...
To make up for her mistake, Song Wen took her machine gun to the human world. She got hauled into the police station for carrying a weapon, and after she got out, someone swindled her out of her money...
If you change someone's fate, you have to live with the consequences.
But why does everything get worse the more she changes it?
Song Wen: Maybe I should take out Su Mu's old man?
Underling: Why would you take out his old man?
Song Wen: Because his old man paid for it. No one can prove anything if he's dead.
Underling: I think I'll just go kill Su Mu instead.
The harder she tries, the worse things get.
The beginning is amazing, but then it falls apart. Fortunately, the ending is good. I hope there will be a sequel.