#...Now wondering if I could play up Dr Gaster vanishing as being partly due to the Forgetting as well

[faislittlewhiteraven]

Undertale/ISaT crossover thoughts 2

Been thinking more about this despite trying to vent out all my thoughts in this previous post and now I have something of a plot I figured I'd share (in case anyone else would like a stab at it/some ideas for their own Undertale/ISaT crossover fanworks).

Story opens with a time looping Chara in the void hitting their breaking point. The wish for freedom from generations of monsters + their own alternating wishes to free their family and hurt the humans who hurt them equals a loop that begins with their incredibly painful death to buttercup induced internal blistering, and ends whenever Asriel (post absorbing Chara's soul) is killed or they 'fail to punish' Chara's human family and well. Chara doesn't know the rules so the two have them have been looping so long that now when they reach the village of humans by Mt Ebott, instead of the friendliness they were shown in early loops (before getting murdered by the official authorities who 'already have orders on how to treat monsters') the villagers now attack them on sight in terror (sobbing monster thing? Sadness!), and they keep dying over and over and over-

Basically full 'Start Again a prologue' vibes, and so Chara in full please just make it stop mode wishes to the Universe...

For everything that hurt them and monsters to be forgotten like a bad dream! (cue The Island, Sif and Chara's homeland, as well as certain nasty individuals like Chara's human 'family' being erased from memory)

For someone kinder, stronger, and untainted by hate to 'be the angel' to free the monsters in their place.

To feed the golden flower seeds stuck in Azzy's fur with their corpse.

To atone in any way for all the pain they've caused.

(To one day be able to sit and stargaze on top of Mt Ebott together with those they love, just like they promised Asriel they'd be able to do)

Cue time skip to after the end of Undertale and Flowey's 'please don't reset and ruin their happy ending' speech, to show Chara's ghost flopping on top of their flowerbed grave wondering how long they'll be able to last before they give in and ruin Frisk's happy ending once more (with heavy implication that Chara is once more stuck in a time loop with no idea how to get out).

Then a cut to Toriel and Frisk making their way down Mt Ebott and spying a shooting star, Toriel remembering her religion (goodness, how could she have forgotten the Universe?) and praying/wishing to the Universe to 'have one of its stars watch over her fallen children, and give them the happiness she could not'. Cue Chara being shocked out of their non existent skin by a person with the head of a star crashing down right through them onto their grave out of seemingly nowhere.

(Aka, Plot line 1: Chara is trapped in time loop hell and Loop has been sent to help them and possibly Flowey? out of it. ... That's literally all I've got for them right now because I have NO idea how to actually have them interact XD)

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Next section of story cuts over to the northern coast line of Vauguard: Sif and family (including Nille) are on their way back to Bambooche after their most recent travels when basically the world explodes into colours, Sif suddenly remembers a LOT more than they used to and they can all now see the large landmass to the north.

Much eye boggling, confusion, wonder and tears are had before everyone kind of parties and passes out but next day, things are being taken much more seriously:

Why is Sif's forgotten homeland, the Isle of Chara, suddenly back? Why are colours? How is this going to effect all of Vauguard (the fashion industry alone..)? And... What happened to the people of the island? Are they ok or..? And how will the rest of the world react to them being the epicenter of so much very unexpected change?

Cue brief discussion on whether or not to go (mostly just double checking with Sif if he's actually up for it despite the many potential horrors they could find there that are sure to be extra traumatising to them in particular), the group checking in with the House in Bambooche to have word sent to the rest of Vauguard (and hopefully the world at large) that the Saviors of Vauguard are on the case, and well. They could catch a boat or they could try walking along that MASSIVE steel and concrete bridge with its weird black road stretching out over the ocean (which was apparently there the entire time and ok, now everyone is getting really freaked out because it seems there was a fair bit more forgotten than 'just' the Island and the Stars. What else did everyone have stolen from their heads?).

(Aka, Plot line 2: The Saviors of Vauguard heading for The Island, hoping for the best and preparing for the worst, and also the plot line I've done by far the most work on, to the point that it probably needs it's own post)

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And last section, Frisk leads their monster friends down Mt Ebott back to 'the village of the humans' they came from and the monsters are stunned by the sight of... Well, wailing and sobbing adults who barely give the monsters a second glance, curious and 'just as silent as Frisk' children who smile and wave, and an old man Frisk introduces as 'Elder' who despite being very wobbly and also in tears, does his best to greet the monsters, thanks them for returning Frisk and very politely asks if Asgore is their king and here to kill them all as the stars foretold.

Cue a bit of awkward 'Um. Yes and no?' with a request to open talks with the 'leaders of humankind' only for the old man to laugh and cry as he explains that he's the closest thing this settlement's had to a leader for years now by virtue of being one of the few adults here with enough presence of mind to actually function through The Forgetting (he thanks his younger years of being an avid traveller) and that since the monsters breaking the Barrier seems to have made The Forgetting stop and they seem to have some form of government then honestly, they're the ones in charge now since stars know there's probably not much left of the Island's government still remaining all this time, and it's doubtful the people of other countries even remember they exist.

Cue everyone other than Frisk who knew all this being very surprised (Frisk's follow up 'explainations' don't really help a lot since The Forgetting is all they've ever known, and Toriel is so messed up when she realises Frisk and a good number of other kids literally can't talk or read without 'Communication Craft' due to the memory wipe effects they suffered under while growing up) and well. Monster kind move out of Mt Ebott at a breakneck pace while Toriel, Asgore, Alphys and everyone frantically try to get everyone settled, help all the very damaged Islanders into as much stability as they can (some recover better than others but there's a lot of grief over lost family, missing people, etc going around and monsters end up stopping more than a few suicides), and get things organised enough they know everyone will be fine before they can move onto working out WTF happened here. Also in the process of all this they end up working out that some things (like who was in charge before The Forgetting) are still being 'auto deleted' from memory (though the effect is fading as time goes on) and also the Island's capital is a space warped nightmare filled with Sadnesses right now and probably everyone should avoid it.

Lots and lots of world building regarding what Monsters vs Sadnesses are, my headcanons for the Universe religion (going with the Monsters also traditionally being Universe worshippers and much talk is had on the differences between 'the old ways' Toriel and Asgore remember vs the traditions and beliefs of the Islanders), and... yeah.

(That's Plot line 3: Frisk leads the monsters to the one semi stable human adult they know of and the monsters realise that not only are they free to live on the Surface now but the local humans both see them as saviors and desperately need their help after going through something that arguably makes the Underground look wonderful in comparison.)

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Eventually I'm going to have to tie all three of these ideas together and I think I've got some ideas for Plot lines 2 and 3 such as:

Sif's family and/or Undyne bumping into each other catching all the trains to search for survivors across the Island

Mirabelle and to a lesser extent the whole party finding themselves the official Vauguardian ambassadors to the newly formed human/monster Island/Isle of Chara alliance who are very much in need of aid and more info about the rest of the world.

Papyrus and Frisk also being ambassadors, making all the friendships.

Sif realising 'the Elder' is their grandfather on their mother's side and trying to wrap their head around having any family around at all (and also trying not to think to hard about all the family still missing).

Isabeau and Odile uncovering just how much stuff countries outside the Island forgot (airports, train stations, cars, all that juicey science stuff).

The Saviors of Vauguard and various Undertale folks investigating the capital together (learning some of the less pleasant aspects of the Island's politics and culture while there including stuff about Sif's dad's side of the family and why the name Chara matter so much). But well. So far have NO CLUE how to get Chara, Loop and Flowey involved with the rest of the cast since well, they're reluctant to leave and no one else knows they're there. So. Yeah. That's what I have planned out mostly. Will list a bunch of stuff I've thought of regarding Sif's group going through the Island and their hometown (totally gonna bring up the 'Euphrasie Islander and possibly Sif's mom' theory in story but not actually confirm or deny it since well, Euphrasie is out of focus and most likely going through a major 'my memories have returned, how could I have forgotten-' breakdown her beloved Claude is going to have to help her through <3) but that's for another post and er. Yeah. Please feel free to share any feedback, ideas or thoughts you might have on this, and to take a stab writing/scribbling up some of this yourself as well as I think it cold be a lot of fun and I'd LOVE the help XD