Unpredictable - Silver x !Spy! Reader

Silver has attempted to save the future many times, trying and ultimately failing to make the world a better, safer place. Failing to make his home a safer place. Every time he rights one wrong, another, bigger one seems to pop up in its place.
Well, this time, things look different. There are cities full of people, shining new technology and laughter filling the air. The future has life.
But all good things don't last forever.
A secret agency run by Shadow the Hedgehog remains the top option of eliminating new threats. Trained agents, specializing in the weapons and technology of the day put pins in evil schemes everywhere.
But when a mysteriously orphaned Mobian gets involved with the agency, evil in the world seems to peak.
Teaming up with Shadow and his agents, Silver races to find out what this evil is before the future is destroyed again.
As well as everything - and everyone - in it.

This is my first published xreader, and I would love to know both pros and cons. I don't own any of the fandom characters or the reader, (obviously). However for plot and timeline reasons there will be several OC's throughout the story.