If I Had A Choice

"Humans have never been able to fully understand the nature of their souls. Not a single person has been able to use the determination and magic resting in their heart. No one has cared for it or even payed any attention to it until the monsters broke the barrier. Humanity was shocked at everything they could do. They were in awe at the abilities each monster carried. While some were amazed, others were fearful, jealous even. These humans decided that if they couldn't do these things themselves, then no one was safe. Scientists, multi-billionaire organizations, entrepreneurs, even the government was interested in figuring out how to give humans the same abilities. Many tests were done, but all of them ended in gruesome failures. Lives were either lost or changed for the worse. Soon it was banned. No one could ever tamper with determination or the soul ever again, but that didn't stop her."

OC x Sans (OMG it's an OC?! Yes, pls don't kill me)
Takes place two years after the barrier was broken. (What was said above did not happen two years after the barrier was broken)
Slow burn
Maybe smut if their relationship actually progresses properly
If the fan fiction becomes popular enough, I'll create an art book on watt pad and post any fan art that is sent to me (Must be relevant fan art)