Note: Takes place after Pacifist ending in Undertale
Prologue
Here's what happened. A friend of ours, she helped us to reach the surface at long last. The sun was beautiful. We've never been so happy. However, when humanity saw us, do you want to know what happened? They did the same thing they did last time. They fought us with no mercy. However, because time has changed, they decided not to trap us in the Underground. They decided to send us to another world that wasn't inhabited by humans where we could live freely and be who we want to be. A few years went by. The humans finally finished their marvelous invention. It was powered by a mysterious force. At first, we thought it was powered by the human soul. We thought it was being powered by their determination. They said that it was actually powered by something that absorbed emotions and turns it to power. They didn't tell us the names of these things and didn't tell us what they were. We went to the new world to find it already populated by mysterious animals who were just as upset as the humans. We decided that there was no point in fighting these creatures. We returned to the same place we did years ago. Asgore named the place 'Newer Home'. He really is horrible with names. Instead of us sealing ourselves below, a dark hedgehog used seven gems to seal us away. He said something about how monsters would never become like them and live among them peacefully. When he used the gems, something crazy happened. We all forgot we ever made it to the surface. To us, our human friend never saved us. We're still here now. Waiting for a being to save us. Perhaps this force from the gems can break the barrier once again. However, who has the ability to control them besides the dark hedgehog we saw? Am I the only one who can remember anything? I have found that I'm forgetting more and more each day. The effects must be slower to affect me than everyone else. Perhaps someone from the surface will save us again. I am willing to hope. Everyone is willing to hope.
-Toriel