Gaster x reader

Sans!!

     It had been close to a year since Gaster's return as well as the beginning of my testing, it has also been close to a year since I befriended Gaster. At the moment Gaster and I were just chatting about random things when he asked me an odd question.

"So (Y/N), when's your birthday?"

     Confused I rose my eyebrow in question causing the scientist to chuckle.

"It's (B/D) *Birthdate*"

      I watched as Gaster grew slightly wide-eyed at my answer.

"So then, It's today?" He asked slowly.

     Confused at first I watched as Gaster pulled out his phone and showed me the screen, glancing to the date I realized that he was right, it was my birthday today.

"Well then, I guess it is birthday."

     Putting his phone back in his pocket Gaster gave me a perplexed expression.

"How did you forget about your own birthday?"

"I lose track of things like that, and I also wasn't paying attention to the date." I answered causing Gaster to give me a deadpanned expression.

"I'm not even going to ask. But I do have to go I was summoned by the king a bit ago and was told to appear around this time, so I'll see you in a bit."

"Alright? Be careful."

     I watched as Gaster teleported away after giving me a reassuring grin, sighing I turned around only to scream in surprise as I saw Sans standing there with a large smirk on his features causing me to take a couple of steps back due to the surprise appearance.

"Sans!! Don't scare me like that damn it!"

    Chuckling Sans put his hands into his pockets as he tilted his head slightly.

"Sorry (N/N), I just wanted to come to get you and walk around for a bit is all."

"Okay?"

     Okay so now I was slightly nervous, Sans never wanted to walk around, in fact, the only time he would walk was when he was with Papyrus or here at work and even then he would sheat and use his powers. Feeling Sans grab my hand I followed he lead me into the woods, a little later we both sat down and began chatting.

"So, what were you originally going to do today (n/n)?" He suddenly asked me causing me to tilt my head back as I thought about the things I was planning on doing today.

"Originally I was just going to run some errands, head back to the house and make dinner for and Papyrus since you guys are always being nice to me. After that, I was going to head back to the lab and drag Gaster to the house and make him rest since I know he isn't getting much as of late." I answered honestly, I then glanced back to the skeleton to find that he was slightly frowning.

"What?" I asked causing him to snap out of his thoughts.

"It's nothing, let's keep going till we reach the clearing yeah?" He asked

"Sure!" I said excitedly. Anybody that knew me knew that I loved the forest and that I really loved the clearing that we would sometimes hang out at thanks to all of the different kinds of flowers that were in it.

     As we made our way to the clearing I noticed how it was already turning into night time, at first I was confused on how it had gotten so late until I realized that when we first left the lab that it was already in the early afternoon and that it does take some time to get to the clearing. (Sans: Unless your me~ Lilly: Sans!! What have we talked about breaking the fourth wall!?! Sans: At least I'm not breaking sixteen different walls like a certain somebody~  Deadpool: Did somebody call me?~ Lilly: No! Bad! Get out of here damn it and let me continue the damn story!! Sans: Hehehehehe~ )   As we approached the clearing I noticed that Sans had suddenly stopped walking causing me to as well, I watched as he turned to me with a grin and pull out what appeared to be a blindfold causing me to grow slightly confused.

"Sans? What's that for?"

"Just trust me alright (N/N)."

     Hesitantly I nodded my head and allowed the skeleton to wrap the fold around my eyes, I was then guided the rest of the way to the clearing. Feeling my foot get caught on what I assumed to be a root I suddenly lurched forward, expecting to feel the pain I felt a pair of arms quickly wrap around the middle of my stomach. Giving a sigh of relief I listened as Sans let out an amused chuckle causing me to pout slightly.

"Hey, your not supposed to be fallen for me, you now that right?~"

     As I was straightened back to my feet I felt Sans keep a gentle hand on the small of my back as he lead the rest of the way to the clearing. Coming to a steady halt I felt as Sans went behind me to remove the blindfold, as my eyes were uncovered I couldn't help but gasp at what I saw. Everybody I knew was at the clearing smiling at me with wide smiles.

"Surprise!" They all shouted

     Covering my mouth I couldn't but to glance around at all of the familiar faces, even the different AU's showed up to the Party. Hearing somebody nervously clear their throat I turned my gaze to find the culprit behind all of this as he nervously fidgeted with his lab coat.

"H-happy Birthday (N/n)."

"I- How did you---?"

"Allow me to explain." Sans offered as Gaster looked away with a small tinge of purple coming to his 'cheeks'.

"I may or may not have told Gaster about your birthday a couple of days ago~ I also informed him how you would probably forget so we came up with a plan. We decided to keep you out for a while and distract you until one of reminding you. When that would happen we would leave and let the others distract you again as the other went to finish up here at the clearing. Pretty smart right?" Sans explained with a smirk (If it doesn't make any sence please forgive me. Basically they took turns setting up the party while the other distracted you and switched after reminding you what day it was.)

"Yeah actually. Who's idea was it?"

     Hearing a nervous caugh next to me I turned back to Gaster as he had a bouquet of (F/f) *Favorite flower* appears in his hand and offer it to me.

"I-Its was mine. I hope you don't mind."

     Smiling I made my way closer to Gaster causing him to grow confused, taking the flowers from him I carefully sniffed with a small smile. Turning back to him I stood on my tiptoes and placed a kiss on his cheek. Standing properly again I turned to Sans to find his smirk larger than before causing me to grow confused once again, not noticing how Gaster's eyes had widened, his blush worsens or how he rubbed where I had kissed him. However, I didn't have much time to dwell on it as Undyne suddenly grabbed me and had me dance.

       As we all were having fun non of noticed how a figure in black lurked in the shadows or how they held an insane smile.

~~~~~~~~~~~~To Be continued~~~~~~~~~~~~

      Holy Merciful Lucifer! Two chapters done within a time span of three days!?! * Sniffles* I'm so proud of myself right now. Anyways, there will be more chapters (Or filler chapters) heading your way, night~

~ Lilly-Pad

Wisp: *smirking*
Allen: *Sweating*
Wisp: You might want to run now Allen~
Allen: *Quickly runs as fast as he can only to be caught by the other girls causing him to scream* Nooooooo!!! I don't want to do it!!
Fair: To bad!!
Alice: Then you shouldn't have made that bet with us~
Allen: Noooooo!!! *Is drug away into a separate room*

{As the door opens you see all of the boys gagged and tied to chairs, as it shuts your able to hear muffled screaming}

Lilly: Read the next chapter to find out what had happened and maybe what happens to the boys!~ *Waves and leaves to go finish up a different story with an amused grin, having no idea what happened herself*