Yandere!Under verse x Reader

What a weird Dream...

It had been a few months, and no call or response from Xchara, XFrisk, and Cross, so perhaps another overwrite happened and they haven't had the chance to call yet...but Y/n knows that Cross probably won't call them unless XFrisk or XChara tell him everything, or he discovers the snowflake...again. Oh well, but at the current moment, Y/n is asleep and having a weird dream.

~~in Y/n's mindscape~~

Y/n is looking around, finding their surroundings are changing like kaleidoscope, it changing from Dreamtale, to Memorytale in the early days, to Memorytale currently, to Soultale, and to a different au all together that Y/n hasn't been to yet.

Y/n:...what the bloody hell? If this is a prank from Dream and Nightmare, i swear to god-

The surrondings suddenly change again and Y/n sees a child- wait no, my bad, Y/n sees multiple children, two bird monsters and a human child. They appear to be talking to each other.

Bird1: Aizza, are you sure this is a good idea? W-we're trying to communicate with the past tjrough memories!

Aizza, scoffing: pss- nah! We'll be fine! Besides it worked, didn't it?

Human: But we don't know which one we got! We don't know if we found Soul, Memory, or someone else!

Bird1: Yeah! L-Laria is right Aizza! W-we don't know if this'll even work!

Aizza, groaning and rolling her eyes: You're no fun Lilith! Besides, it'll all owrk out! We're traveling through life memories with a spell after all!

Laria: U-uh, guys? W-we found someone...

Liltih and Aizza look at Laria, who is pointing at Y/n. Y/n, now knowing they have been caught, steps out of the bushes with a wave.

Y/n: hey

Aizza blinks before flying over, and Y/n finally notices that Aizza is a ghost-dove monster, Lilith is a raven, and Laria has their soul infront of them for some reason, and it is brown(Compassion).

Aizza: Oh! You're Y/n! This is better than finding Memory and Soul!

Y/n: Uh, thanks? Where did you kiddos come from?

Lilith, walking over with Laria: The future...We used a spell to first travel through death memories, which is what I control, and then life memories, which is what Aizza controls. We brought Laria along because they're the soul survivor of Soultale, unless you count the ghosts in their head...

Laria nods, silently studying Y/n. Y/n sweatdrops, not sure how to handle that information. Aizza suddenly flies around them, causing Y/n to get slightly dizzy before they stop infront of Y/n.

Aizza: We know who you are! You're Y/n, the original guardian of memories! Memory would often talk about you, all good things!

Liltih; Yeah, and he talked about how a knight lifted you up off your feet and took you away, and then you were never seen again...and then Memorytale and Soultale started to get destroyed by someone with blue strings, so Memory and Soul used the last of their power to send us into the mindscape, and then to here once we found the spell.

Y/n's eyes soften, and they bring the kids into a hug, wrapping their wings around them.

Y/n: oh you poor things...don't worry, I'll help ya out. What do ya need help with?

Lilith: W-well, Memory said it all started with a thing called the X-Event, so we came here before it started...

Y/n: the X-event, eh? I'll talk to Ink and Memory about that...

Lilith, panicking: W-wait! Don't tell Ink!

Y/n, blinking: why?

Lilith: H-he helped start the X-Event!

Laria, speaking up softly:...Yes, but I get the feeling something's changed this time....Mx.Y/n, do you still know Dream and NIghtmare?

Y/n, nodding: Of course! They're my brothers after all!

Laria: oh...that's good. Where we come from, you three are enemies because none of you could get along once Nightmare ate the apple...it's good to see that they are still your brothers here..

Y/n nods and then their fur and feathers prick up, feeling overwhelming warmth and coldness, well aware of who just arrived, but chooses to ignore it in order to try and help the children.

Y/n: alright...that's, good to know I guess....is there anything else I should know?

Aizza: well, Memory gave us a photobook that he said would change when we've changed things in the timeline, so it'll appear when you wake up!

Y/n:...and what'll happen to you three?

Aizza, blinking: I...don't know. I think we'll become physical there, in your time....but I-I dunno...I don't want to die.

Y/n then decides to adopt the children on the spot and picks them up in their arms, causing them to squeak and squirm as Y/n walks away, going for the exit of the Memoryscape, well aware that their brothers are following them.

~~in reality~~

Y/n wakes up and the children appear with a thud, landing on the ground. Y/n chuckles and gets out of bed, helping them all up.

Y/n: you all okay?

Lilith, nodding: W-we're fine Mx.Y/n.

Laria suddenly looks panicked and looks around, which causes Y/n to kneel down infront of them, putting a paw on their shoulder.

Y/n: Hey, it'll be alright kiddo. Lilith mentioned something about ghosts in your head, so maybe they went back to Soultale in their physical bodies. Want to go and check?

Laria nods and Y/n stretches slightly before picking up Laria, holding them gently in their arms as they make a portal to Soultale. Y/n and the kids walkthrough it right as the apple brothers appear in Y/n's bedroom.

~~in Soultale~~

Y/n appears in the RUINS, leading the children to Cetas's(Toriel's) house, showing the kids how to solve the traps and puzzles should they ever come here again, but Y/n also knows that Laria knows how to do this, and that Laria and Aizza could probably just fly over the traps, or phase through them. Perhaps, in this timeline, things will be better. Y/n won't get kidnapped by the knight, Soultale and Memorytale won't get destroyed, and the mind siblings won't be enemies...but only time will tell my friends.

Word Count: 1050