Zero doesn't know who he is.
He woke up in the ruins of an abandoned laboratory, losing all memory. The only thing that accompanies him is a string of mysterious data that keeps beating in his mind - he calls it the "zero code".
This string of codes allows him to see the information essence of everything in the world, and can rewrite the temperature of flames, the hardness of steel, and even the form of life. Every rewrite requires a price; every devouring erodes his self.
As the memory fragments are gradually pieced together, Zero discovers a terrible truth: he is not a human being, not an experimental subject, but the "error code" at the bottom of the world - which should have been deleted, but survived unexpectedly.
And the existence that "created" him is currently looking down at him from a higher dimension, waiting for him to complete his last evolution, and then... Recycle.
"They said I was a fault," Zero opened his eyes of data and looked at the sky, "Then let the whole world have a blue screen."