Congratulations, you've transmigrated to a parallel world.
Your cheat: fictionalization.
As long as enough people believe the stories you make up, they can become reality.
And so, starting with a chance gas explosion in the city center, Lin Yan began his path of fabrication.
"Actually, that wasn't a gas explosion. It was the work of a local magician."
"That magician comes from a wealthy family, you know."
"Everyone knows the Holy Grail War is held in secret!"
The posts he casually wrote online drew far more views than he ever expected.
The next day.
When Lin Yan saw Rin Tohsaka waving hello to him at the school gate...
"JOJO! I don't want a quiet, ordinary life anymore!"