Heres a really bad theory but I want to post anyways, to see people's thoughts on it.
This is going to be long but hey.
Ralsei will betray us in chapter 2:
Theres a couple of implications that, closing the fountain will destroy all the land it created, or will effect something in the dark world.
Ralsei actually says the Fountain creates the world, something specific to notice.There is a gate that separates Ralsei's World (The only places Ralsei had ever been) and the rest of the dark world.
I'm kinda going to go onto a more story like section on what I think will happen in the beginning or what i roughly think will happen, and leave the evidence near the end.
Susie has asked for kris and her to go to the dark world again the next day.
Kris obviously is in a tough spot. In a bird cage.
At least the kris she knew.
I believe it will end up being something along the lines of, her trying to find kris, and Noelle end up tagging along to help her. To the point they go to his house to find the cage, and kris being the only human seemingly in town, they will of course realize this is kris. Susie will obviously want to go to the dark world to find Ralsei, the only "friend" she knows that could help fix this.
Noelle will of course be forced to go with her, and will end up in the dark world with her, I can imagine Susie will explain things as they go to his castle.
However they'll likely be met with multiple betrayed cards (I'm referring to every enemy as cards in this.) As Susie and Kris destroyed their home.
Ralsei will be found, and will say something to direct the fault to Susie, maybe something like "you weren't suppose to shut the fountain. How could you do this?" And of course Susie will begin to understand where this is heading. This is really all I have for the theory part.
Why will Noelle be dragged into this?
Toby has confirmed she will play a much larger part in the next chapter. Even possibly teasing a dark world concept.
Ralsei changes the story of the prohecy.
He originally says how a monster, human, and darkner prince are needed to deal the fountain, but then says later on that only the human can.
Neither monster or darkner are actually needed in any situation, aside from getting past cards. But had there been a situation that they wouldn't fight, it would be find with the human alone.
Once again kinda story based but:
A reminder. If it does end up with Ralsei shifting the blame on Susie and Kris.
Remember Lancer is the only one who heard Ralsei tell the prophecy to Susie and Kris.
It's obvious where I'm going with this.
No one would actually believe Lancer due to him being friends with Susie.
However, It also hints that it could influence two possible people. That being Seam and Rouxls Kaard.
Rouxls Kaard has a strong relationship with Lancer and may believe his word. It's also likely Rouxls Kaard will play a much bigger part in the next chapter. Along with Seam and Noelle.
Seam openly states he has no care for what happens, and actually alike to jevil, despite them taking it in complete different ways, is nihilistic.
But likely wouldn't help someone who destroyed people's home unless convinced by someone else.
Which is actually fairly interesting. As they are two characters with a gaster like design. (Going off the belief of mystery man as gaster.)
Theres a lot of implications in my opinon at the very least of Ralsei not being Loyal.
Ralsei doesent actually do anything to prove loyalty to the group.
Ralsei seems to be too much in Kris's Favor, as if he were trying to make sure he convinces you no matter what, going and even saying hes fine with you hitting him along the journey.
In general there has to be a lot more to Ralsei than "fluffy boy." Since I do kinda have doubts of toby making a character that's overly pure.
Now this is something completely directed off of Ralsei but I want to add it.
For the first chapter, fighting may be the actual route.
In the end, everyone will feel betrayed. Making no difference on your actions. The king will probably not be imprisoned. Lancer will be shamed.
But theres a key difference.
For those who didnt notice, but I'm sure most have. Not only does Jevil give you a different item whether ir not you fight him, but theres a major difference on his point in the story.
"Take this and do your strongest!"
"Take Me and do you strongest!"
Pacifying, also results in him saying that he'll sleep for the other 100 years, hinting at him not being in chapter 2, only mentioned.
So as implied, its likely we'll see some interactions with seam if we get JevilsKnife.
Along with this, I doubt we'll be able to pacify in the next chapter and it'll be harder to act, as seam states Jevil was only a taste of what we'll face, however we will likely still be able to spare.
Okay so that's my theory, that you kinda wasted time reading. I'm really not confident with much of this. Leave any debunkers or if you have evidence for this in the comments.