nah i really really like this idea. like the twist is so obvious but it also doesnt have to be done at all. it could be played striaght or left ambiguous.
just a normal variation of Sans waking up in a pile of dust and being horrified.
vauge memory/ feeling he's been in a fight. he feels like hes out of energy or maybe hes too upset to think straight and he runs to check on his brother - only to be intercepted by the bad sanses.
not sure which ones or how many to start. maybe he runs into idk killer and he tries to fight him - but between the check and the fact Sans feels like hes barely keeping up and that killer is playing with him and maybe the rest start showing up and killer and everyone else think he's part of their group and this guy they call dust
and he doesn't know for sure that theyve killed his brother. maybe someone was dragging along a terrified bunny monster and let her go because their work here is done - eveyone here is traumatized and there's plenty of negative energy for nightmare to feed on...
that even though he cant talk his way into "staying behind" he starts playing along
so sans pretends to be dust. learns theres not just multiple timelines that were making him depressed but learns about the multiverse.
and its gotta be scary and fucked up and moments where he really thinks hes going to be discovered that hes *not* this dust sans. and hes gotta be terrified and *angry* that ***this*** is what these other sanses have become. very much in a judgemental way.
and then the more he learns about why they became the way they did he's trying to hold onto you know the feeling *he'd* have made better choices
but then maybe he gets put into a situation where hes yanno gotta do dust's job and kill people and like. he wants to get back to his brother its what hes holding on for and maybe the person the first time is a bad person so its not... really murder is it - hes just doing his job as a judge.
and like it just eats away at your morales.
also i want him to go from "oh fuck they're gonna find out" to a period where he thinks hes in the clear because its been long enough and they havent noticed - to like this scene where he has to do horrible thing and does it and while he's freaking out about that he realizes or believes *nightmares known all along*
because nightmare feeds off negitive energy right? so like thats horrible and terrifying and even if nightmare never lets on to the others that Sans isnt dust because Sans is miserable and nightmare is getting off on that - hes going to keep putting sans into horrible situations and test him and push him to make things *worse* and then the others will figure it out.
and theyll be pretty direct in getting rid of him.
so it hyped back up the oh no killer and Horror are making comments about how "Dust" is acting different or whatever.
maybe he doubles down on playing his role idk. its for his brother right? he just has to figure out how to get back to his brother - even though he now believes nightmare is *never* going to take him back to his timeline unless it will make Sans *more* upset
and then theres the stress dreams.
hes gotta sleep - gotta sleep extra to get his HP above one right? holding onto that singular hope, the only fuck hes been able to give for so long is for his brother - but it feels restless. they could sneak up on him in his sleep.
these people are not sane or safe to be around. and even if they were he's witnessed and ends up participating in their horrors
and at some point he sympathizes with them. because given what theyve been through how could they be anyone else - and now he's not even sure he can hold onto himself in this situation.
hes also becoming a monster
its no wonder he dreams of dust!sans
and its no wonder its as if he *is* dust in his dreams. maybe he didn't start out that way, but hes turning into him right?
and the like. idk. big reveal moment. not sure how thatd go down
maybe if he *isnt* actually dust, dust shows up. maybe they fight and Sans kills him. and maybe the bad sanses are horribly awfully chill with it because highlander style there can only be one in the group after all
or maybe when dust shows back up they figure out whats been going on after an almost comedic - no *hes* the imposter - moment and then idk they keep this Imposter Sans or something. which could lead to a handful of different possibilities.
or if he * is* dust he starts seeing his dead brother encouraging him to do the awful things he doesn't want to but *has* to to get back to him, because he loves papyrus right? maybe first in dreams and then occasionally in high stress situations. comments of hes acting more like himself maybe lead to him trying to say he *isnt* Dust only for them to not take him seriously and prove that he *is* or maybe that sometimes this shit happens. maybe when faced with the truth he breaks down as he remembers everything properly. idk
and weirdly enough i do want this to be shippy in a way im not sure i can pull off. like. regardless what path i chose at this point.
because before the beginning of this story - dust *wasnt* in a relationship with the rest of the bad sanses. but then this pretend or amnesia dust starts learning more about them and connecting with them despite everything or acts differently enough to keep them fucking with him
and the fun thing is that leads to essentially two more possibilities for me to explore as i could play it straight and leave out the shippy stuff or i could get into the shippy stuff at this point.
and the problem i have with any of this is that. i dont know enough about the bad sanses, cross (which i think is from epic tale maybe???), or dream/nightmare, or the star sanses to pull it off.
like to make this have emotional impact im gonna need to get a grasp of their personalities - or at least how i want to portray their personalities.
really excited about this idea as you can no doubt tell from the rambling though












