Okay, let's ramp it up a notch. Feel in a fantasy-style mood. If we don't get bogged down in a doggie-licking love story, and don't get cut off at the knees with a "suddenly the ground opened up and everyone fell in" scenario, this could turn into a nice continent-bopping cloak and dagger fantasy!
Not sure what a furrie is. Remember hearing of something like that from some novel my wife read. But that just leapt out of my head. A sentibeast is an animal to which the person is tied.
In the interest of keeping the work from sounding like some kind of documentary I thought I'd put it into the text. A glarstone is named for the planet which no one had named to that point. The stones are given upon maturity and the person somehow becomes chosen, or chooses a beast to link to. Has that been done ad infinitum somewhere? If so I can retract the post.
A 'furrie' is a slang (and somewhat derogatory) term for a person who dresses up like an animal regularly. Also sometimes used to describe a shapeshifting character who fails to exhibit any characteristics of the animal they shift into. Essentially, a human with a specific type of superpower that has no impact on their personality.
I'm now wondering if the beast they're 'linked to' is a separate creature somehow, or if you mean that more like a totem kind of thing?