This is my crack at predicting the conclusion of Deltarune (as you can see, I don't fear mentioning the Mother franchise, despite MatPat doing it once and it going horribly). I hope this could generate discussion on a topic that somehow has never been covered, while also inviting some possible ideas to add to the theory- or even shoot down. There are plenty of things I didn't go into yet, such as Goners, or even cool inverse symbolism. For example, explaining the creation of a dark fountain is almost the exact inversion of releasing a needle lol. I would love to hear what I may have miss from both Deltarune and Mother fans alike!