[@BCTheEntity]If there's anything that you need help on regarding the show, I'm sure that we can fill you in if you don't have the time to watch the 70+ episodes of the series. What you've given us is pretty much all you need to know, but again, we can fill you in if need be.

There are a few things that You'll need to know, like what's happening at the moment that you jump in, but given the context of the characters, you should be fine without a recap, unless you would like one, that is. Yeah, we've stayed up until the crack of dawn in all of our respective time zones to post as much as physically possible, and we are currently in our second Bulk, as I like to call it. 

While I'm trying to help, I can't speak of Kronshi or Akaya on your character idea. I had the idea of an elderly man who knew about the gems, and befriended a gem long ago to learn about them, but the idea was shut down for various reasons.

If the idea is passed, what if your character had some sort of map? If they are a gem-human hybrid, then I'm sure that things were left to them since the gem would have been required to abandon their physical form to create the hybrid. Maybe a map to the Kindergartens, and your character is just doing rounds in a desperate attempt to find some new gems or anything that could help them?