okah so the concept came to me in a dream,, jk it came to me in a science class lmao
So I was just sitting there, teacher was talking about how gemstones can have liquid and solid states sometimes, and I went: "huh... isn't there something in the wiki about determination having a liquid form..??" And I looked and YEAH.
"Injecting" implies that it was a liquid of some kind, so I went "lol what if souls were crystal determination" and then i thought a little harder and made a comparison to something like carbon. Carbon can take many forms, most of the time solid. But it has been proven that in the earth's core, carbon can take a liquid form. So I thought a little harder. What if, with enough pressure and heat a soul could be crystallized further, like the process of carbon turning into diamonds.
So what if these gems which are pure determination could be used by a monster like some sort of power up to increase the amount of power they have??? What if they had other properties???? And then it all started branching out from there.
So from my thoughts, I've created a few conclusions:
When a monster with a high enough already LV (like for instance, Flowey) tries to combine a number of souls together, the heat and pressure generated causes them to fuse together into one full gemstone.
Said gem can only be used by one person. Once that person, weither it be a monster or human, uses the gem for anything they are bound together perminantly. The gem creates a link between the soul and itself, and if that bond is shattered so will the user's soul.
The gem can change the user's body perminantly and harshly. This will be important later. (foreshadowing)
The gem changes the user's LV, as if they had absorbed all seven human souls. But without the unfortunate effects of your body melting from having too much determination. Though if I bet you use it too much, that could definitely start happening :33 like an overheating laptop.
The concept for the actual AU after I had figured that all out was "oh golly gee I wonder what the hell would happen if sans somehow got ahold of that thing???" Because of course we gotta have our boney boy being the main point in this situation. And what if the energy from this caused a explosion that destabilized the underground and what if sans was stuck down there alone trying to figure out how to do something, anything with this gem that is now a perminant fixture in his existence????
So: Pacifist route, everything's going fine and jolly until the final fight against Flowey. He manages to kill/fatality injure all the monsters and kill Frisk. He tries to combine the energy of the souls together, fucks it up, ends up creating the gem. Everything explodes, and the gem gravitates towards sans as he's the one with the most HP left. He somehow manages to get a hold of the gem, manages to stumble his way back to the edges of Snowdin, passes out in the snow. But because he has the gem, it activates. It puts sans into a THREE YEAR CRYOSTASIS under the snow while it slowly heals him and modifies his body. Because that's just what it does. And the rest I have yet to theorize about. BUT WHAT I DO HAVE IS DESIGN IDEASSS nevermind I dontt have any photos of them atm. SOON. TRUST.
Anyways this has been brewing in my brain for months and i am shaking in my boots now that I'm actually talking about it,,,,,,, commentary, suggestions, and addendums are all welcome in rbs/my askbox :33
BTW SOMEKNE TOLD ME TO NAME THIS SANS CRYO BECAUSE OF THE CRYOSTASIS THING AND SO THAGS WHAT HIS LIKE FUNNY LITTLE MULTIVERSE NAME IS. NO IDEA WHAT THE AU IS GONNA BE CALLED YET SEND ME SUGGESTIONS.