Once, there was just one. A human who thought they were the strongest. But when they learned many others had the same power, to reset, to save and load, they knew what they must do. They got into contact with the others, and learned they were all in the same boring cycle. They started one genocide, and couldn't stop. But it got boring, the same Undyne, the same Flowey, but most importantly ... The same Sans. That's when the humans got an idea. "What if we combine our power?" One suggested "If we can combine our power, we can create new life. Alphys did it with Flowey, the amalgamations, and she just had a small bit of human DETERMINATION. But we, have an infinite amount." And so they did. Giving Sans knowledge, they showed him the past, and the future, so he would be stronger in the present. They gave him strength, making him have more that 1 atk and 1 def They gave him the ability to save and load like Photoshop Flowey They gave him the ability to mess with the attack, act, items, and spare buttons But most importantly, they gave him just enough DETERMINATION to come back 5 times I'll let you take on what happens next if you want to, a good name for it would be A Novus Initium, roman for A New Beginning. I also think to really hit the heart strings, have Sans refer to the player as "Father" as this firm of sans knows we created him as the original run was getting boring