Fair enough. My only defense is that I've finished far more than I've left unfinished, though it is still what you make of it. No excuses. They're not done. Some of them I don't know ever will be.
I did finish one, a couple of threads ago, that I was making. I didn't outright associate my name with it, nor will I, though . . . my name is in there somewhere.
I believe the closest I ever came to an in image explanation was in the second version the image set where you're kidnapped from earth. You get a choice of elder being/alien crime organizations to join, which you can refuse, and may then end up with law enforcement in the outer worlds instead. I expanded the concept by letting you refuse this as well, in that second version, resulting in another set of options.
To put it simply, Jai is a deep jade stone (not to be confused with actual Jade), which, in this setting, is used for arcane constructs. Visually a deep jade with caustic red energy felt aesthetically pleasing in my brain. Jai bodies are made around arcane cores, which your soul, your 'self' is fused to. This grants long life, in 'imperfect' versions, sometimes millions of years. A truly perfect version is a rarity in the setting, but does exist as an option in my Dreamer image. The problem is that the fusion to such a core prevents your soul from existing as a normal 'soul', meaning when the imperfect cores die out, you're just screwed, no life after core death. Whereas the perfect core will never burn out, but stuck as a part of physical reality.
In setting Jai bodies are one attempt, of many, to recreate a truly immortal body. Jai bodies through the arcane, others through spirit, eldritch power and so on. All attempting to recreate the Itima state, the first and only true immortal in the setting (in terms of immortals converted from mortal states, there are other immortals, but most are simply not options for mortals).