The final tragedy isn't "Someone dies." It's "Someone kills."

Theory

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I apologize if this is a theory people already made and are familiar with, but it's been something that's been on my mind for a while and Ch.5 reinforces that idea.

First, we can confidently say that the tragedy isn't "The Dark Worlds are sealed", because then the world"s" wouldn't be saved. It cannot be "the worlds will be separated" either, because it wouldn't really be a tragedy. It would be somewhat sad, but Susie made friends that aren't Ralsei and Ralsei made friends outside of the shit squad. Their behaviours would be a massive overreaction, and it wouldn't explain why Ralsei obfuscate the truth from the very start, even before he was friends with the rest of the gang.

So, next interpretation: Someone dies.

I do not believe that someone could be Kris. Nobody checks on Kris at the end, and if Susie was told their best friend would die very soon, I have a hard time believing she would have nothing but Noëlle on the mind in chapter 5, even if she's in denial. The weird route sees Susie care much more for Kris, so she's very much capable of doing that if needs be.

I do not believe it's Ralsei. It fits in Ralsei's ideology of Darkners being tools for Lightners and explains why he doesn't want to be a person, but there's a massive wrench in that interpretation. Namely, why would he go to such lengths to hide the truth? I don't think it's because he didn't want to hurt Susie's feelings. Not only does Ralsei tells outright to Susie he isn't real, but mainly, he doesn't make ANY effort to pushback Kris and Susie's affections. Considering we know he feel like he deserve nothing and only exist for others, shouldn't he try to distance himself rather than push the group to be friends at every instant?

I also do not think he would be so gung-ho about changing the prophecy from the start considering his mental state in 1/2/3.

Susie is a valid interpretation. It would make sense, but there is three \_tiny\_, minor details that make me can't help but think twice about this.

The first being her initial reaction, of violent rejection and complete disbelief to the point of laughing twice. That doesn't \_contradict\_ the "Susie dies" interpretation, but isn't it a somewhat strange reaction? She has fully accepted her role as a hero, THE hero. She doesn't reject the prophecy out of hope that she can overcome it, she does so because it \_disturbed\_ her. Why would she be disturbed about making a heroic sacrifice? She wouldn't be \_happy\_ about it, but Susie's not the type to lash out in vain against something, despite what it may seem. When the Titan begin regenerating, Ralsei's the one to ask Susie to keep struggling in vain, not the other way around.

Ralsei also never act any differently toward Susie than he does towards Kris. Sure, he know to keep 'em close to his chest, but considering the mountain of dialogue that is clear foreshadowing in hindsight in Deltarune, it's weird that we haven't found any previous Ralsei dialogue that would corroborate "Susie dies."

Finally, and the crux of my own interpretation: the dialogue in that scene is very specifically written. Susie says: "I wouldn't let it happen... Kris wouldn't let it happen... and \_obviously\_ YOU wouldn't let it happen."

Why woul Ralsei specifically \_obviously\_ wouldn't let Susie die? The final tragedy states that this is a necessary event to save the worlds.

I do understand that this is frames as Susie reassuring Ralsei and telling the prince she puts her trust in him, but "obviously" + the capital "YOU" makes the line very specific. It almost seems as if Ralsei has more capacity to prevent this fate than Kris and Susie.

So, here come the part we've been waiting for: I believe the prophecy is "Ralsei is going to kill someone (possibly Susie?)"

Ralsei is a character that is both defined by his hatred of the prophecy and his unwillingness to deviate from it. Ralsei completely refuses to take any direct action and do anything the prophecy hasn't told he would do, yet he urges Kris to passively go against it by being pacifist, arguing that he thinks it will lead to a better ending.

\*Why?\*

Why \_wouldn't\_ Ralsei lash out in any way to try and break the prophecy, and why does he believe "being nice" is somehow the only way to change the tragedy?

Because he believes that being more proactive in any way might precipitate the ending of the prophecy. If he starts using his fire powers at any time, maybe it would be the time where an accident happens and someone dies to fulfill the tragedy. His only way to make sure he can't kill anyone is to keep his powers under lock and key and make sure to never use them.

It would explain a glaring plot hole: why does Ralsei jeopardizes the mission against the Knight? Ralsei explicitly tells us that he wishes we could have beaten the Knight and end the prophecy then and there. Why wouldn't he use his powers here, if he can finally break the prophecy? Because the failure state against the Knight is just "The prophecy will continue and eventually the tragedy will happen." The only reason Ralsei wouldn't use his powers would be if he knew that it could directly bring about the Tragedy itself, and the only reason why his powers would be linked to the Tragedy would be if Ralsei killed someone.

Ralsei's entire character motivation wouldn't be "I don't want to be a person because I'm a dead man alive" but would rather be instead "I'm scared of being a person because I'm scared of what being a person could make me do."

It makes the "obviously YOU wouldn't let hit happen." line make so much more sense, and Susie violent reject of the prophecy, as well as her disbelief and subsequent denial too. Why would she refuse to believe she could die? However, it would make sense that she is in complete denial that her friend, especially kind and meek Ralsei, could kill someone.

A line just after this scene also struck out to me: Ralsei apologize to Kris for "making this about him". It could mean that he feels bad about having a breakdown over his role of keeper of secrets when Susie just learned she would die, but it could also be interpreted as Ralsei apologizing about breaking down over having to take a life, when it imply that someone else will die as a result.

It would explain why Ralsei is so adamant about not wanting anyone to see the tragedy.

Also, "you have to kill" is much more relevant to UT/DR themes than "you have to die". This time, it's not "Kill or be killed", it's "Kill or let everyone else die".

What do you all think? The big mystery is "who would be the one to die then (it could still be Susie)", but I think it still reframe the entire thing in a perspective that makes it make more sense in my opinion. Am I onto something or is this garbage?

Posted Jul 6, 2026, 1:13 PM UTC

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