Requested by: @_User_Deleted

(⚠️Warning⚠️: Blood, abuse, and other possible triggers! There isn't any cussing, but it is implied. I censored it only because I don't like to cuss in my stories. This is also going to be a VERY LONG STORY. I hope you enjoy!)

(By the way. This story isn't about a child!reader, or a small!reader, and Sans isn't a giant. This is a normal age/height differenced story. I hope that isn't a problem.)

Narrator's P.O.V.

Let's just say your life wasn't the simplest.

It used to be simple and fun. Your parents loved you, you had a nice house, you lived a good life, but now everything changed. You were out late at night with some friends of yours. They wanted to go star gazing, but they heard wolf howls and decided to ditch the idea. You didn't want to leave the beautiful sight, so you remained where you were. The howling kept getting louder and louder, but you didn't think much of it. You were to engrossed in the view to notice a giant werewolf was creeping up behind you.

The werewolf, who was around seven feet tall, came looming over you with its jaw dripping blood from a deer he just killed. Some of the blood landed on your forehead and caused you to flinch. You wipe the blood from your head and looked up at the beast before you. Once you figured out what was about to happen, you screamed. The werewolf took this open opportunity to bite the upper most part of your arm, which caused you to release a blood curdling scream. The beast unclamped his jaws from your arm, not tearing your skin, but leaving deep teeth marks there instead, and fled.

You were left screaming in pain. Slowly, you could feel something abnormal circulate through your veins. You knew it had something to do with the werewolf that just bit you and attempted to stay calm. Pulling out your cellphone, you called your best friend to come and pick you up.

They soon showed up and saw the bite on your arm. "Hey, what happened?! Did a wolf bite you, or something?! Do you need me to take you to a hospital?! Here let me grab my first aid kit. It's in the glove compartment." They then rushed over to their vehicle and grabbed said kit and dashed back. "Here, give me your arm." You hesitantly did as you were told, hissing as the peroxide went into the wound. They then put some Neosporin on and wrapped your upper arm in bandages. "This is all I can do, but you'll probably have to get stitches later. Here, let me help you to my (car/truck)."

~12 Week Timeskip~

You were sick for weeks. You couldn't sleep, you had a horrible headache, and you felt like you had the flu, but none of the medicine your parents had gotten you worked! Today you decided to try and get some sleep on the coach, which was by the window. It was around 10:00pm, so your parents decided to go to bed. They kissed your forehead and walked upstairs. "Night, dear. Try and get some rest." Your mother said, closing the door behind her and your father.

After attempting to sleep for an hour, you decided to give up. "I'll never fall asleep." You then looked out the window and saw all the stars in the sky and even the big full moon. It was gorgeous. The trees surrounding your house and the cloudless sky was a breathtaking view. You then felt your heart beat pick up and your head starting to hurt worse. You growled in frustration. 'Wait, growl?'

Skin was being covered by thick fur. Your face was beginning to elongate and make a snout. Your teeth got longer and sharper. (E/C) eyes turning a golden yellow. Leg bones snapping and rearranging themselves. You tried to stay quiet, but you screamed anyways. The pain was to much for you to bear. Your parents came running down the steps, only to see their daughter turning into some beast.

(What your new form looks like, but in either black, silver, or grey.)

"What the-?! What's happening??" Your mother shrieked. You couldn't answer her. "She's a monster! Just like the ones that came out of that blasted mountain! She's not our daughter anymore, (M/N)! She's a monster, a freak!" You father said, going into his 'man cave' and comes out with a gun.

You finished your transformation and started to back away, fear and confusion evident in your eyes. Tears were streaming down your fluffy face as you moved away from your father. "(F/N)! Don't you dare shoot her! She's our daughter! We have to help her!" Your father merely grunted and loaded the gun. "Burn in hell ya freak!" The sound of the gun shot rang throughout the woods behind your house and your house itself. You weren't injured though. Your mother had forced the gun up in the air before he pulled the trigger. She then grabbed the collar of his shirt and yanked him towards her. "Don't you DARE try and shoot MY daughter again!" He flinched at her tone and nodded, glaring at you when she turned her attention to you.

"Honey, are you alright? Did he hurt you?" You shook your giant head and nuzzled her. She chuckled and kissed your fuzzy head. "Despite this form of yours, you're still you."

-Back to the present-

That was two years ago. Last year your mother passed away from breast cancer. This left you with your father. He, soon after your mother's death, began to drink a lot and began to abuse you. It started off small, with just drunken yelling, but soon escalated to him throwing beer bottles at you and worse name calling. He'd call you many things that hurt you. One broke you emotionally. "You ****ing mutt!" After other events happened, you started to believe every word he said. You thought nothing of yourself.

"Mutt, get me a beer!" Your father yelled, throwing a beer bottle towards you. It shattered on your head, leaving multiple shards of glass to embed themselves into your skin. You simply stood up and grabbed his favorite beer brand and handed it to him. He snatched it from your grasp and quickly opened it, downing it quickly.

You went to the bathroom, knowing your dad was probably watching the (FIFA World Cup/ Football game), and cleaned up your forehead. You then left the house for groceries, knowing you needed to get some before your dad went off on you again. You had your (hood/beanie/hat) on your head, covering our forehead. 'Milk, Beer, Bread, Cigarettes, Bandaids/Bandages, Neosporin, and Meat', you read to yourself.

You pushed the door open to the grocery store, immediately noticing the mass amount of monsters in there. You weren't surprised by this, but didn't expect so many to be here at once. "Ya gonna grab a cart?" Turning towards the deep voice, you say a short skeleton standing impatiently behind you. You shake your head and move out of his way, grabbing a small basket instead and scampering off. Quickly, you grabbed all the items on your shopping list, except for the beer. You walked over to the alcohol aisle and grabbed a box of Samuel Adams.

As you head over to the cash register, the skeleton from before walked behind you with his brother. They were pushing a lot of lasagna ingredients and different pasta noodles, but there was also a dozen mustard bottles scattered about. The shorter of the skeleton brothers watched you place the box of beer down to get scanned. This made him suspicious. Usually men bought beer. Not that women couldn't, but it just felt weird to him. Samuel Adams is also one of the strongest brands of beer out there, so he knew this girl wasn't buying it for herself. She looked way to thin and attractive to be an alcoholic.

After you bought everything, you went home. You didn't live far from the grocery store, so you walked home, not that your dad would let you drive his truck. "Where have you been?!" You heard, opening the door and coming in swiftly. You ignored his question and dropped the beer box in front of him. He smiled to himself and started opening the box. "At least your not a total mistake."

Once you finished putting all the groceries away, you began to fix the house up. You had to do all the chores, but stay OUT of your father's room. He would kill you if you went in there. Doing the laundry, sweeping, washing dishes, and fetching the groceries were only a few from the list. You made sure they were done immaculately before going to lay down in your room, totally forgetting what tonight was.

Hanging on your wall was a moon calendar. Circled in red sharpie was today's date and the image of a full moon. This was not going to end well.

Sans, being the lazy skeleton he is, is laying down on the couch, snoring per usual. Papyrus was cooking lasagna in the kitchen, but also seemed to be on the phone. Sans woke up, hearing Papyrus holler in anger. "I AM NOT WORKING FOR THE POLICE DEPARTMENT, UNDYNE! THAT IS FINAL!" Sans could then hear Papyrus hang up the phone and saw the phone coming towards him.

Luckily, Sans' magic was quick enough to catch the phone before it hit him. Sans sighed in relief and Papyrus panicked, rushing over to his brother. "SANS! ARE YOU ALRIGHT? DID I HIT YOU?" (Fell!Pap is concerned?! What?! I believe the Fell AU just acts rude and tuff, but they soon end up being sweethearts, or at least kinder, when they get to the surface. Papy is now kinder and Sans isn't as scared of him.)

"Nah. It just surprised me, but I caught it. Not a scratch on me, see?" Sans said, showing Papyrus that he was fine. Papyrus nodded, releasing a sigh of relief. He then grabbed the phone and went back into the kitchen.

After Papyrus and Sans ate their dinner, Papyrus decided to go to bed and Sans was laying in the couch. He was having a hard time falling asleep, so he decided to walk to Grillby's, which is a bar and grill on the surface. Grillby is still owner of the place, but now he has people working for him.

You, feeling a sudden, familiar pain searing through your body, woke up and nearly screamed in agony. The only reason you didn't scream, was because your father would hear you. You're more terrified of your father than the pain you're going through. The light from the moon caught your attention. Turning your head towards the beautifully lit sky, noticed the window was your quickest way out of the house. Your father would skin you alive if he caught you leaving the house.

The window opened silently and you quickly jumped out, not caring what damage you would sustain from the fall. It was only a ten foot fall, but your body was in the middle of transformation. The moonlight shone on your wolf form's (silver/grey/black) fur and the golden yellow color started to take over your (E/C) eyes. Your clothes were torn and left on the floor in your room. You landed close to the woods in which surrounded your house.

The last thing on your mind right now was your father. Your mind was stuck on hunting. Your sense of smell was heightened and you could smell a deer around five yards from you. Jaws drooling over the smell of such a delectable creature. This wasn't your first transformation, nor was this going to be the first time you were going to eat a wild animal. Crouching down and starting to stalk your prey, you quietly sneak behind the unsuspecting buck. His head down, eating the leaves off of a bush. You then lunge at the poor buck, quickly sinking your razor sharp teeth into its neck.

After it stopped moving, you started to eat your prey, licking the blood from your snout. You then howled at the moon, proud of your kill. You then ran off, farther from your house then you'd usually go. Trees, bushes, and other creatures became a blur as you sprint through the woods. You enjoyed in this form. You then caught the whiff of something delicious. It was coming from a grill and it smelt like heaven, but it also had alcohol mixed with that heavenly scent. You ignored that, though you hated the smell of alcohol.

Sans was about to walk into Grillby's, but he say something lurking in the shadows. It was large and seemed to have golden, piercing eyes. Feeling threatened by the creature, Sans fired a warning shot at it. The sharp bone just barely missing the creatures head. Growling was then heard and the being started crawling out of the shadows, bearing its bloody teeth towards Sans. This scared the crap out of Sans, though he's seen dog monsters of the same size, but he's never seen a creature on the surface like this. It looks so much like a wolf, but it's also human like in its appearance.

"What the ****?!" Sans said. The creature, which happens to be you, starts to come closer; growling at the strange being in front of you. "Back off! I can dust ya in a matter of seconds if you don't back the **** off!" Your werewolf form couldn't understand what he was saying, but could sense the immense magical power radiating off of him. His red eyes disappeared and one large red one flared like a wildfire. Feeling overpowered, you started to back up and run off on all fours, trying to leave as fast as possible. Sans fired two more sharp bones at you, trying to kill you.

One of the bones barely missed your head, while the other pierced your leg. Luckily for you, it didn't touch the bone, nor did it go far enough in to cause major damage. The only downside is, is that this bone hurt, badly. You howled in pain and fell to the ground. Your breathing became ragged and the wound started to bleed. You tried to pull the bone out, but it wouldn't budge. Sans, still standing outside Grillby's, decides to find you. He knows he hit you, since you howled so loudly. He teleported towards the area he thought you'd be, but he teleported about seven yards from you.

"I landed a pretty decent hit on ya, didn't I?" He said, walking towards you with a sharp bone in his hand and a devilish smile on his face. "Y'know, you really shouldn't growl at random strangers. They can kill you for stuff like that." You then stood at your full height, which was around seven feet tall, trying to look frightening and get him to leave you alone. Your face held pain and fear. Sans noticed this and dropped the bone once he saw tears in your eyes and heard your quiet whimpers. He tried to walk towards you, but you flinched and backed up.

You looked up and saw the sky getting brighter, which meant the sun was rising. This scared you immensely. You then attempted to scamper off, but the bone was still stuck in your leg, causing you to stumble. Sans, still not wanting to frighten you anymore than you already are, snapped his fingers. The bone then dissipated, leaving a large, bloody hole in your leg. You looked down at the open wound and then at Sans. Quickly, you bolted off towards your house, hoping your father wasn't awake yet.

Sans shrugged, but made sure to remember his encounter with you. He walked into Grillby's and sat down in his usual stool. "Heya, Grillbz?" Grillby, the owner, walked towards Sans. "What do ya want, Sans?" Sans then began to explain what just happened to him, including what you looked like. Grillby nodded. "That's what humans call a werewolf, Sans. They are very rare and dangerous." Sans nodded, listening to every word he had to say. "They're humans that have been infected by other werewolves, or were born that way. The one you met, sounds like a bite victim. They're more aggressive than the naturally born ones."

"How do ya know all this stuff, Grillbz?" Grillby shrugged. "I enjoy mythology. It's quite funny seeing what humans come up with." Sans snickered. "Alright, now that my question's answered, can I get some mustard? I think I deserve some after fighting that werewolf." Grillby rolled his eyes and nodded. "Whatever."

A man on the other end of the bar table, listened in to their entire conversation, gritting his teeth and squeezing his beer bottle.

You got home just in time to turn to normal. Your father wasn't even home! He was probably out at the bar again, or out with his friends playing pool. You didn't care, as kind as he's not home. "Gah, this hurts. What the heck did I do out there?" Memories of what just happened to you were all a blur, except for the skeleton's face. He was the same skeleton from the grocery store.

You shook your head, trying to focus on the bloody wound on your leg. 'Thank God I bought bandages.' You thought to yourself, wrapping the wound up tightly. Walking into your room, you grabbed a new pair of pajamas to wear, throwing away the torn up ones from earlier. After changing, you laid down on your bed and went to sleep.

In the morning, you heard your bedroom door being pounded on by your father's fist. "Wake up you worthless mutt!" Jumping out of bed, you scampered out of your room and bolted down the stairs. You then begin to make breakfast for your father. "Would you like scrambled eggs, or an omelette with you toast?" Your father didn't answer and just walked towards you. He then smacked you across the face, knocking you into the counter and causing you to fall on the floor. "You snuck out last night. You left this house! You even turned into that d***ed creature again!"

You started to back away I fear. 'How did he find out? Crap, crap, crap! I'm so dead!' He picked you up by the collar of your shirt, holding you against the wall. "I don't want you anywhere near this house again if you keep this s*** up! Either run away and never come back, or I'll kill you for trespassing on my property. You've got five minutes to high tail it out of here."

Once he let go of you, you ran as well as you could, to your room and packed everything you owned. "Two minutes, mutt!" The man yelled. You had everything you could fit in you decently sized suitcase. You then ran out the house and down the road, quickly pulling out your phone and calling your friends for a ride.

"Heya, (Y/N)! What's up?" One of your friends answered. "I just got kicked out of my house and was wondering if I could stay at your place?" They went silent for a second. "No can do, dude. Our house is full. I'm so sorry." You thanked them anyways and called your other friend. "Hey, (Y/N)." You tell them the same thing and hit the same general response. Hanging up your phone, you sit down on a bench, looking at all the kids playing on the jungle gym. Their parents watching over them and helping them cross the monkey bars. It made you smile, but tears slip from your eyes anyways.

"Hey, what's wrong, Doll? Are ya lost?" You turned your head towards the familiar voice, seeing the short skeleton once more. You flinched and shook your head violently. "N-n-no sir! I-I'm j-just people w-watching. That's all." You said, scared out of your mind. "Hey, hey, hey. There's no need to be scared of me, Doll. I may look scary, but I'm not. I promise I don't bite; unless you want me to." He said the last part with a seductive tone and ended it with a wink. You blushed and shook your head.

"Then what's the matter?" Sounding concerned. "It-it's nothing you should worry about." Sans then looked down and saw your leg had a bloody bandage around it. "What happened there?" He pointed out, causing you to flinch again. "Oh... that? It's... Wait? Why are you asking me all of this. I don't know you and I don't need to tell you this." You said, trying to get him to leave you alone. "Well I've seen you around a bit and wanted to see if you were alright. Is that a bad thing?" You shook your head. "N-no. I'm sorry. I'm (Y/N). What's your name?"

"Heh. My name's Sans, but my friends call me Fell." You smiled, starting to feel a lot more comfortable talking to him. "It's nice to meet you, Sans." Fell nodded and shook your hand. "Nice meeting you too, Doll." You blushed again at the nickname. "Um, Sans? I have a strange question to ask." Sans nodded, allowing you to ask away. "Do-do you know any place I could stay for a while?" He nodded and smiled. "Of course. You could probably stay with me and my brother. I know you probably won't be comfortable living with two strangers, much less guys, but it's better than being in the streets, or in a hotel ya can't afford." You smiled and hugged him. "Thank you so much!" You said with tears in your eyes.

Sans had a sudden realization. Those tears reminded him of that werewolf. The wound on your leg was in the exact same spot the werewolf had his bone attack in. You flinched when he asked you about it and became defensive. "Doll." He said in a deeper voice than before. "Yes, Sans?" You said in a shaky voice. "Have we meet before, but under different circumstances?" You looked at him confused and afraid. "We met once at the grocery store." You pointed out. Sans shook his head. "No. You know what I'm talkin' about, don't you?" You flinched and got up. "Um, I just forgot. I've got a friend coming to pick me up soon. Sorry for bothering you." Sans grabbed you wrist before you could leave.

"Sorry, Doll, but that's a no can do. We both know what happened last night." He then teleported both of you to his house. "Why did you attack me? I didn't do a d*** thing to you!" You flinched and started to tear up again. "I-I..." Before you could finish your statement, he yelled again. "You were what? Spit it out!" "I can't control myself when I'm in that form! I can't think straight! I can't even remember everything that happened!" You shouted, tears pouring down your face and anger evident in your eyes. "I could only remember your face and coming home with a hole in my leg!"

Sans flinched, noticing the pain and fear in your voice. "I'm sorry if I hurt you.... I'm sorry any of this happened... It would have...." You then mumbled the rest under your breathe, which Sans couldn't hear. "What was that?" "I said, 'It would have been better if I died and Mom was still alive!' Happy?!" He shook his head and looked at you once more. You honestly had no clue what happened last night and you really were scared. He felt horrible for scaring you like this. "I-I'm sorry, Doll. I was just... upset and let it get to my skull. I'm such a numbskull."

You giggled quietly, finding his pun to be quite funny. "Hey, (Y/N). I'm sorry; truly I am. I didn't mean to blow up like that." You stood up and hugged him. "I'm sorry for whatever happened last night." Sans smiled. "Are we even now?" You nodded. "Yeah."

"UM, SANS? WHO IS THIS AND WHY IS SHE IN OUR HOUSE?" Papyrus said, starring at the two hugging each other in the living room. "O-Oh, Bo- I mean Papyrus! What're you doing home early?" Papyrus shook his head. "I just finished visiting Lady Toriel and King Asgore." He then pointed to the two of you. "NOW, ANSWER ME. WHO IS SHE?" Sans nodded. "This is (Y/N), Bro. She's going to be staying here for a bit. She needed somewhere to stay and we had an extra room, so I let her use it." Papyrus nodded and went to the kitchen. "WELL, I'M GLAD WE CAN HAVE SOMEONE ELSE TRY MY MAGNIFICENT LASAGNA!" Papyrus shouted in his normal voice.

"Sorry my bro's so loud. He's just a naturally loud talker. Here. Let me show you your room." Sans then lead you to your room. He opened the door and let you do whatever you need to in there, telling you that there's a bathroom in your room as well. "Holler if you need anything." You nodded and smiled at him. "Th-thank you, Sans." He nodded and shut the door.

~2 years later~

Sans and you are now really close. He's introduced you to everyone and you've seemed to get along greatly with them. You mainly hung out with Napstablook, though he's very self loathing, he's been a great friend of yours. You've even helped each other get better with your self loathing. Alphys and Undyne seem to ship you and Sans together, as well as you and Napstablook. You told them that you didn't like Napstablook that way, but never told them anything about you and Sans.

You, obviously, have grown feelings for the skeleton. He's been there for you since you left your- I mean, that Man's house. He's helped you when you felt down, gave you a place to live, he even helped you when you transformed. Sans would calm you down and play with you. Your werewolf form acted like a puppy most of the time. The only difference was when you needed to hunt. You were a totally different creature when that had to happen.

"Sweetheart, where are ya?" You smiled at the sound of his voice. Your boyfriend, oh yes you read that correctly, was calling you from downstairs.

"I'm in our room!" Sans then teleported into your shared room. "What're ya doin' up here? I thought you wanted to go on our date tonight?" You shook your head and snuggled up to him. "Not tonight." Your said in a tired voice. Your head was now in the crook of his neck. "It's tonight. Isn't it?" You nodded. "Alright, Sweetheart. Let's take a long nap. How does that sound?" He took your soft snoring as a yes. "Alright, Sweetheart. Love you."

Sans then laid a blanket on top of both of you and went to sleep himself, holding you protectively to himself. "I'll never let anyone hurt you again."

(I did it! I finished this oneshot! Haha! Thank the lord! I hope you enjoyed!)

(Word count: 4,560 total)