Toby Fox here.
Kris is the knight.
In dark worlds Kris and the soul are separated.
Blue Kris is not Kris.
End of the prophecy is the human sacrifice.
The previous fun gang was King, Carol, and the human.
Ralsei is currently everyone's enemy.
Gaster is awaiting us in the next program, but he will not meet us unless we present him the Deltarune.
Hometown is a dark world.
Papyrus was a goner and is now gone.
Sans knows, is furious, and is acting on it.
He is getting closer to Toriel because of bad jokes, and to get closer to (you) to get closer to Gaster.
When the time will come to move you, and the Deltarune to the third program, Sans will tail you.