What was the Chrono Signature? It was the very thing that made time travel possible.
If time were linear, then every single second that passed in the universe was being recorded and assigned a Chrono Signature.
This also applied to the creatures that existed within a certain period.
The creatures born today had a certain chrono signature that was slightly different from the creatures born yesterday.
The wider the gap between Chrono Signatures, the wider the difference and the harder it was to travel back in time.
It was like the difference between the colors blue and red. Anyone could tell that they were two completely different colors.
But if they were put on a spectrum to check what lay in between, one would notice the purple that existed in between them.
And if one still dived deeper to observe the area in between the purple and red, and the purple and blue, one will also discover that they cannot quite tell where the blue, red, or purple ended, or where they began.
