Undertale AU: Reader x One Shots

Soulmate!Gaster!Sans x Soulmate!Reader

AHHHHHHHHHGGGGGGGGG THIS IS MY SECOND ONE SHOT WITH A SONG MIXED IN!!!!! EM SORRY!!!!*groans* I couldn't help myself. Please enjoy.

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G adjusted his guitar strap as he walked. There was this open, mossy clearing in the forest he liked to visit. It dropped off at a cliff and he liked to hang his legs off the edge. It was a place where he could let go and relax, he also liked to play his guitar there. The area was kinda secluded so no one except G and his brother Papyrus knew about it. Of course, Papyrus never went, it was just G. What G liked most about the place was that it had one of the best views of the sunset. Not to mention that it was pretty magical at night as well.

He sometimes wondered how it would feel to share it with his soulmate. Soulmates were matched based their most valued possession. Your soulmate had the exact same item. Sometimes it was a locket, maybe a box of artistic pencils or pens, or maybe a handmade scarf. Whatever it was, no one except you and your soulmate possessed the same item.

For G, it was his guitar. His father had given it to him before..........the incident. G ran his phalanges over the strap of his guitar. It was bittersweet, the memory of his father. He didn't like to think about it much.

G shook his head to clear his thoughts as he neared the clearing. However, he noticed something was different. Someone else was there, and that was you. G crept closer, curious and somehow drawn to you. You were relaxed against a tree, tuning your guitar. A guitar, that looked so much like G's.

You positioned your fingers and began to play.

(Play the song.)

A dangerous plan, just this time
A stranger's hand clutched in mine
I'll take this chance, so call me blind
I've been waiting all my life
Please don't scar this young heart
Just take my hand

I was made for loving you
Even though we may be hopeless hearts just passing through
Every bone screaming (I don't know what we should do)
All I know is, darling, I was made for loving you

G thought that your voice was the most beautiful thing he ever heard. You turned as his suave voice sang the next line for you.

Hold me close
Through the night
Don't let me go, we'll be alright
Touch my soul and hold it tight
I've been waiting all my life
I won't scar your young heart
Just take my hand

You didn't know who he was, but something about him, and the way he sang, just seemed so right.

'Cause I was made for loving you
Even though we may be hopeless hearts just passing through
Every bone screaming
I don't know what we should do
All I know is, darling, I was made for loving you

As he sang, a faint yellow blush scattered across his cheekbones. G smiled. He was certain that you just had to be his soulmate. Nothing else could explain how he felt singing with you.

Please don't go, I've been waiting so long
Oh, you don't even know me at all
But I was made for loving you

I was made for loving you
Even though we may be hopeless hearts just passing through
Every bone screaming
I don't know what we should do
All I know is, darling, I was made for loving you

You smiled, besides being a bit flustered that someone heard you sing, and sang with you no less. G's guitar quickly caught your eye. It looked just like yours, the rustic edge to it and how it oddly smelled like rain and toffee. (I just really like how they smell. Feel free to change it though.)

'Is.....is he my soulmate?'  Your heart pounded against your chest as you realized this.

"Hi..." You started awkwardly.

"Hey." G said, leaning against a tree across from you.

"S-So," You began nervously with a tint of pink graced upon your face, "A-Are you.....my...soulmate?"

G chuckled, "It looks that way." He sat himself down next to you and lifted your hand to his lips (Just go with it.) then kissed it. "The names G, Doll." He winked at you and your blush grew darker in turn.

"Y-Y/n." You stuttered. He was quite the charmer, wasn't he? "Y/n," G murmured. "Beautiful." He smiled genuinely while keeping a gentle grip on your hand. He then intertwined his skele-fingers with yours. "It's amazing to finally meet you, Y/n."

"You too, G." You smilied while your heart fluttered in response to the feeling of your hand in his. You hesitantly scooted closer and rested your head on G's shoulder. "Is this ok?" You asked gaining a little more confidence.

"Yeah." G breathed. "Yeah, this is perfect." G ran his thumb over the back of your hand and you just about melted.

The two of you stayed there and watched the sunset, your souls beating as one.

I hope you enjoyed! This was really fun for me to write, I love song related one-shots. There's definitely gonna be more of these and I hope y'all don't mind.

Until next time, biscuits!
Scarlet~✨