Undertale One-shots : Why me ?

Gaster x Yandere Beast reader part 1

Long ago , their were two races , humans and monsters . They coexisted smoothly for a while , but tales and lies and a startling truth had spread throughout the kingdom. Humans soon grew afraid of their once monster friends and allies , relationships and friendships were destroyed in so little time... A war had begun between the monster and human race .

It was a cold September morning when your life changed forever . It seemed almost as if it was swept away right from under your feet , perhaps it might as well have been . It was a day like any  other , you'd gotten up to groggily yet happily eat breakfast that your family had prepared for you . You got dressed in your favorite outfit , and fixed your (h/l) (h/c) hair up the best you could . You grinned at your family as they set the plates on the table , you went to sit down . But before you could , the door was violently rammed open , shards of wood hit the floor as soldiers quickly rushed in . The screams of your family alerted you even more of the danger you all were in .

Your (e/c) eyes widened at the sight of your terrified mother being impaled with a spear from an armored solider , your dad was put in a choke hold . You reached out towards your father quickly yelling at them to but him down , they did so ... After snapping his neck . Fresh horrified tears dripped down your cheeks as you screamed you lifted a barstool the best you could and hit the one who killed your mother over the head quickly , causing them to yell at you and curse . You fought the best you could as they grabbed your arms and forcefully dragged you out of your once happy home . You kicked and screamed as they did so , you looked around your village , only to see your neighbors getting the same treatment as your mother and father . Yet non we're being dragged off like you , your friend (b/f) locked eyes with you for an instant , they cried out and tried to get to you ...but it was for not , they were quickly cut down by an axe of another soilder .

Your scream echoed throughout the village , one of terror and emotional agony.

~~~~Time Skip~~~~

The soilders who dragged you for miles had finally threw you down onto a almost stage like set up , your hands were now tied and rubbed raw . You looked up at them and angrily spit at their feet , causing them to back up in disgust . You heard less heavy foot steps hit the floor as someone approached you , a voice filtered over the area , one who obviously thought they had power . " Ah , I see you've returned with the subject I requested , not to old , not to young ." The skeletal monster who stood before you said , lifting your chin to get a better look at you . You grunted at this " Don't touch me ! " You yelled , reeling back from his oddly warm touch .

He let out a tut at your actions " no need for this , it's illogical to struggle now ." The skeleton monster said , rasing back up and straighting his back or spine . He turned and walked away from you , just a few feet " we will begin ." He said , turning to the few other monsters that were there , motioning to them . You watched as the placed odd objects and got almost in a circle around you , they held one another's hands , you would have snorted if it wasn't for that all gentlemeny douche with an attitude before you . Before you knew it , their magic was revealed as well as their souls , the floor beneath you began to glow in strange patterns . Fear coursed through you as the skeletal monster came before you ,kneeling once more .

He took a small knife and suddenly cut your cheek slightly , causing you to yell out and lunge , head-butting him harshly , he yelled out and grunted , holding his skull and raising back up . He glared at you as your red blood ran down your red angered cheeks , dripping down to the floor and causing the glow to intensify around you. You looked down at the strange glow fearfully , before you felt something shift within you , your soul , your precious (s/c) flouted before you . You gazed at it in wonder as it flouted before you , you watched it as the skeletal man backed up further . Your soul suddenly pulsed once , then twice , you watched in shock as your soul twisted within it's self , crumbling into a (f/c) mist before you , this seemed to shock the skeletal man " Wait ! No , that's not what's supposed to happen !" He growled , quickly going over a note book that he  held franticly in his hands.

Your look of shock quickly turned to fear from his reaction , as well as the movement of what used to be your soul . The mist quickly engulfed your figure , causing you to scream and writhe franticly in terror . Your screams only grew louder as you heard pops and crunches coming from you own body , to your horror , you realized those were your bones shifting . Your only relief was that you felt no pain as your horrific change began , your skin began to grey until it was a dark shade , sharp spines popped and stretched from your spine to down your back , Causing you to shriek. Your body stretched and grew , your hands growing claws and your feet talon like claws , a long dark tail shoot out from just above your butt , it's blade like form slicing at the colored mist that concealed you from sight .

A visor screen soon covered your eyes , hiding your horrified (e/c) eyes from sight as horns erupted from your skull , the mist placing gold like trinkets around them . You scream in terror , only for it to change from your normal horrified scream to a beastly roar as your teeth sharpened , your roar rumbled within your chest and the monsters ears around you . The monsters , as well as the skeleton monster we're horrified at what was happening , not having expected this , they could feel the tension and shaking of the air around them from your roar . The skeletal man seemed to lose the horrified look after a bit , curious of what was happening behind the (f/c) mist of your once soul.

Just as the mist began to clear , a few monsters yelled out " Sir , Gaster ! T-that isn't what was supposed to happen ! Was it ?" A frightened monster asked. The now deemed Gaster tried to get a look at you as the mist began to clear , but all he saw was a glint of a golden visor before you leapt into the darkness of the night , away from preying eyes .

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I'm working on a few more one or two shots , I thought of this and decided to give it a try , if anyone likes it , I'll make sure to continue it ! Thank you for reading ! Also , sorry it's a little short for now .