Disclaimer: Characters from Undertale belong to Toby Fox, I only own the Oc's
An Au where things seem normal. Frisk falls into the underground, starts the genocide route, Chara controls her, they kill all the monsters. But who would think that the s...
We open up with a younger Sans sleeping in bed with a younger Papyrus. When he suddenly woke up with a Blue eye. After getting up and putting on his black jacket and red gloves, he walked towards a brightly lit room and saw the same skeleton working at a desk. When he suddenly banged on a desk and spilt the coffee startling Sans. Making him visible to the skeleton.
?????: Sans, what are you doing up so early?
Sans: Sorry Dad, I just couldn't sleep. What were you working on at your desk.
?????: Something King Asgore and I have been talking about for the past couple of days.
Sans: Let me guess, I can't help again?
??????: Actually this time were gonna need your magic for this experiment.
Sans: I knew it......Wait, WHAT!!!
?????: Yes we are gonna need your help for this experiment, so I advise a good night sleep because it will take place tomorrow.
Sans: Okay Dad!
As Sans walked back to bed, the skeleton started to look saddened at Sans.
?????: I'm Sorry Sans there is no other choice.
The Next Day
Sans: So what am I gonna need to do Dad.
?????: Well Sans This is gonna take 3 parts, we'll need your blue soul magic, the Prince's Royalty Magic and the Princesses Determination.
Sans: What For?
?????: To power this machine.
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Sans: What will it Do?
?????: It will have enough power to open the barrier between the human and our world. With this machine we could make it to the surface once more.
Sans: But dad you said it yourself, the barrier is too powerful for one human by itself, how will using her determination be enough.
??????: I've raised you well Sans, you are correct that the power would be too much for 1 human soul which is why after the experiment is done. The princess will die.
Sans eyes widened after that was said.
Sans: No I can't let that happen, I won't let it happen, there's got to be another way Dad. Please tell me there's another way.
?????: I'm sorry Sans but that is the almighty truth there is no other way, this is our only chance to make it to the surface. Some must die for the rest to live, that is purely how the world works.
Sans: But isn't there a way to save everyone, have everyone live, protect everyone, you're the head scientist how have you not found a way to-
?????: I'VE TRIED EVERY POSSIBLE WAY SANS!! THIS IS THE ONLY WAY, YOU NEED TO GROW UP AND ACCEPT THAT YOU CAN'T SAVE EVERYONE!
?????: I thought you would've after your past shenanigans with this locket
Sans once again went wide eyed as he looked up to see the skeleton with his heart locket.
?????: So who will you choose your friends, your kind, your family, your brother, or a human?
Sans remained silent.
?????: "That's what I thought." He then tossed the heart locket back to him.
Sans: Dad you said that some must die for the rest to live. WELL THEN I CHOOSE YOU!
