Thanks Star123light456 for the request. I enjoyed writing this one. Also, I mentioned Nightmare's birthday because Dec 21st (today) is Nightmare and Dream's birthday.

With that said, enjoy this Floof.

The day started off normal for Nightmare.

Killer woke up, tore up a dummy, and had relaxed on the couch in a span of fifteen minutes.

Horror woke up next and cooked breakfast.

Dust was slow to rise, but just flopped on the couch and passed out again.

Cross took forever to get up, but when he did, he was boundless energy.

Error doesn't live in the mansion, but Nightmare can assume the day started relatively normal for his l̶҉̰͚͖͕̍̈́̅͗̏̇͢͜͜͝o҉̢̡̲͇̌͗̀͢͝v҉̨̊͢͠͠e̵̡̫̫͍͕̎ͭ̐͟͟͝͞r҉̵҉̛̠̩̥̋ͦ̆͆͟͞͡͞͠ dear friend.

Nightmare could assume that his dear friend probably knitted and watched Undernovella before looking over the AU list and destroying a handful of AUs. This wouldn't be the most radical of assumptions.

However, today took a sudden turn when he felt an explosion of negativity.

Nightmare instantly focused, narrowing his gaze when he noted the negativity to be in Error's room and match Error's signature.

He's probably planning on hiding in his room all day.

Nightmare sighs, getting to his feet and walking to the room in question.

Probably something Ink said.

Nightmare pauses, hearing sobs from inside the room.

Huh...he normally doesn't sob in the mansion.

Nightmare releases a soft knock on the door.

"Error? May I come in?" The sobs go quiet, shuffling sound in the room before the door is slowly opened by a sleep-deprived looking skeleton with tear tracks on his cheekbones.

"What happened out there?" Error sniffles slightly, looking up at Nightmare.

"I-i did my j0b...in 4 F-f1ow3rf311..." (I-i did my job...in a F-flowerfell...) Nightmare sighs internally.

Of course, Flowerfell. One of the AUs where the angst is cut up to eleven...but Error doesn't normally cry about that.

"Did something happen, Error?" Error nods, now looking away from Nightmare.

"Do you want to talk about what happened?" Error shakes his head. Nightmare runs through everything he knows Error likes, smiling.

"Wipe your tears and come to the kitchen in fifteen minutes, okay?" Error slowly nods, and Nightmare heads to the kitchen, thankful that Horror finished up a while ago.

"Boys, Error and I will be having a nice relaxing day. So go pester an AU or something." The boys nod, vanishing together with a giggle. Nightmare shakes his head and gets back to the task at hand.

~~~~~~~~~~~

Error slowly leaves his room, heading down to the kitchen when Nightmare told him too, sniffing the air and smelling the sweet and soft smell of lavender. As he gets closer, he hears soft music playing from the kitchen.

"N-nightm4r3?" (N-nightmare?)

"I'm in the kitchen." Nightmare's voice drifts out, just as soft as everything else Error's smelled and heard so far. Error enters the kitchen, looking at the scene.

Several lavender candles burn in the kitchen, being the only light in this room. A music player sits on a counter, releasing the soft music Error was hearing before. Nightmare is dressed in an apron, his golden crown resting a few feet away. He sends a soft smile to Error, before revealing the object in his hands, a mixing bowl.

"I figured we could cook and just have a relaxing day." Error smiles slightly, stepping closer to Nightmare.

"W-wh4t wi11 w3 b3 c00king?" (W-what will we be cooking?) Nightmare shrugs.

"You decide. I was thinking we make a bunch of sweets, but we can also make lasagna or spaghetti or whatever you want." Error hums softly.

"Wh4t d0 th3 b0y5 w4nt?" (What do the boys want?) Error takes the bowl from Nightmare, unconsciously stirring it while looking through the recipe. Nightmare chuckles.

"Nah, Error. What do you want? The boys love your cooking. They'll eat dirt if you told them you made it." Error chuckles in response.

"F4ir. W3 c0u1d try m4king 50m3 14y3r3d c4k35." (Fair. We could try making some layered cakes.) Nightmare nods, flipping to the correct recipe.

"Then let's do it." Error chuckles softly, smiling happily, the pain of the AU forgotten for the time being.

~~~~~~~~~~~

The kitchen is a complete mess. But thankfully, the candlelight was enough, mostly because both dark-boned skeletons weren't exactly vulnerable to the darkness, one able to see and the other used to blindness.

However, despite the mess, both were laughing and smiling.

"Remember that one birthday? Hahah! Dream's face!"

"W3 3gg3d him! I r3m3mb3r th4t v3ry w311." (We egged him! I remember that very well.) Error pauses for a moment, getting a mischievous glint in his eyelights.

"I5n't it y0ur birthd4y5 t0d4y?" (Isn't it your birthdays today?)

"Yes. Want to prank him again?" Error shakes his head.

"N4h...I'm thinking 0f 4 gift f0r th3 g00py birthd4y b0y." (Nah...I'm thinking of a gift for the goopy birthday boy.) Nightmare instantly sobers up, narrowing his gaze.

"No, Bad Error. We're having a relaxing comfort day for you." Error groans.

"But I f331 b4d th4t y0u'r3 5p3nding y0ur birthd4y w0rrying 0v3r m3!" (But I feel bad that you're spending your birthday worrying over me!) Nightmare's face gains an unreadable expression before the two are suddenly on a bed, Nightmare gently hugging Error close.

"It's my birthday. I choose what I want to do with it. In case you haven't noticed, I don't do anything I don't want to do." Error remains silent as Nightmare's voice rumbles within his chest.

"I want to take care of you, comfort you, and make you feel better." Error closes his eyes, listening to the soothing rumble.

"So let me take care of you." Error nods slowly.

"0k4y." (Okay.) Nightmare chuckles.

"Never thought I'd forcefully cuddle you, huh?"

"N3v3r th0ught I'd b3 4b13 t0 h4nd13 it." (Never thought I'd be able to handle it.) Nightmare hums softly, the rumble reaching Error.

The soft and deep rumble from Nightmare calls to Error, almost begging the exhausted destroyer to sleep, just for a while.

It's almost saying 'it's safe to sleep, you are safe' and Error is inclined to believe it.

Nightmare begins to sing, lulling the exhausted destroyer further into sleep.

"You know I want you, It's not a secret I try to hide~

I know you want me, So don't keep saying our hands are tied~

You claim it's not in the cards, But Fate is pulling you miles away, And out of reach from me~

But you're here in my heart, So who can stop me if I decide, That you're my Destiny?~" Nightmare's voice is deep and soft, Error's breathing slowly as he is lulled into sleep by the King of Negativity.

Strange that the King of Negativity is so good at comforting me. Is the last thought in Error's skull as he closes his eyes and succumbs.

"What if we rewrite the stars? Say you were made to be mine~

Nothing could keep us apart, You'd be the one I was meant to find~

It's up to you, And it's up to me, No one can say what we get to be~

So why don't we rewrite the stars? Maybe the world could be ours, Tonight~" Nightmare finishes singing, looking down to find his dear friend...no...lover sleeping soundly against his chest.

"Goodnight my dear queen." Nightmare mutters, shutting the TV and lights off and getting comfortable. He sends one tentacle to leave a note for the boys before succumbing as well and cuddling his little destroyer close.

(1177 words)