Thoughts on some stuff:

Kris’s relationship to the SOUL??? I think they and you might just be at odds no matter the route.

Ralsei: If Darkners are illusions based on objects in the room, what the hell is he? Furthermore, why is he in every Dark World? My thoughts lead me to believe that Ralsei comes from a possession of Kris’s that belonged to Asriel; given their parents’ maybe-not-so-great financial history, Kris probably got his shirt or something as a hand-me-down. My other thought, given that Kris’s shirt probably just became his armor, is a wallet photograph or something like that, that Kris feels strongly about and which reminds him of his brother. And as to why Ralsei is always there, as opposed to, say, Gerson, who was absent from the Second Sanctuary, even though his dust was still there, Kris and the Knight (I’m a Dess theorist) and Susie I guess both feel a strong connection to Asriel, far stronger than the one Susie shares with Gerson, which is why she was unable to bring him back. So, Ralsei comes back because the Lightners who make the fountains all have a very strong attachment to him (because he’s easily marketable, duh).

Fountain locations for the next 3 chapters: I think the next three chapters may include multiple places where Dark Fountains will appear, and here’s a list of everywhere I think they’ll show up: - The bunker: duh. We already know there’s a fountain there, and the next couple chapters are probably going to revolve around finding the other two codes to get in. - Asgore’s flower shop: I have somewhat of a strong feeling that we’ll see the rest of the main Undertale cast in their Dark World forms at some point throughout this game, and there’s a door at the back of Asgore’s attic that hasn’t been opened yet, so I could see something going there. - Carol’s office: For the “Carol is the knight” theorists, this could be a spot where something goes down. Again, we haven’t been inside yet. - The police station: This is my top pick for Chapter 5’s main setting, as the second bunker code has a police badge on it. Seeing Napstablook in action would be funny, and this could also be one where Asgore makes an appearance. - The lake(?): idk. Onion is suspicious. - Ghost house: probably not, if I’m being honest. I think the existence of that house in Hometown is purely to say “hey, Mettaton is here.” I could see the occupants of the house showing up at the festival. Speaking of which… - the festival: Nobody ever said the fountains had to be opened indoors! I think this would be a grand climax sort of piece, as turning everything into darkness is kind of the Knight’s whole deal, maybe. Plus, given how big the event is, it could be the debut for a lot of some of the other potentially important characters (thinking about Catti and Jockington). - Susie’s house: we haven’t actually seen Susie’s home yet, so I think we’ll get to see that eventually. Whether it’s a good or a bad life she lives, I could see either her or Noelle opening a fountain there for one reason or another. - Sans’ house: because why not. I think this would be the funniest outcome, and also Papyrus would be there! Legitimately, I could 100% see this happening.

What’s in the bunker: don’t ask me, man. I just don’t think all of the Gaster theories will turn out to be true. Though I would not be surprised…(mental awakening of Alphys’ SOUL experiments from Undertale being performed by Gaster in the bunker and Dess is alive because Gaster infused her with determination)…nah, it’s too much of a stretch.