Those extra memories had not been inserted by Leon.
Rather, the world they inhabited had undergone changes to its underlying rules under Leon's intervention.
As a result, the world's timeline automatically revised everyone's past.
As for what memories had been added...
Take Earth as an example.
After the universe was reopened, Tony Stark from a certain universe...
would discover that, at some point in the past of the world he remembered, an event similar to a "spiritual energy resurgence" had occurred.
Countless supernatural power systems had appeared on Earth.
A vast number of ancient documents had also emerged from nothing, recording methods for cultivating prehistoric supernatural powers.
Internal energy, true qi, magic, battle aura, genes, Word Spirits, superpowers...
There were as many incredible ways to grow stronger as there were stars in the sky.
The international order had changed drastically as well.
Tony even froze for a moment.
Then, without meaning to...
he discovered that he actually possessed a power called "Machinery," which allowed him to use Zero Generation to create vast quantities of high-powered weapons.
This was also a power he had translated and cultivated from those ancient documents.
The documents said...
that if this power reached its highest realm...
he might even have a chance to create a computational-element AI capable of turning all things in the world into data—creating worlds with a thought and destroying worlds with a thought.
"Shit... something's wrong here, isn't it? Was this world originally like this? Why does something feel off?"
Tony Stark rested his chin on his hand, utterly puzzled.
"Yes, yes, yes! That's exactly it! There isn't a single problem!"
Eternity and the other gods loudly praised Leon's work, unable to hide the excitement and delight on their faces.
This was awesome!
They had never seen a universe like