Quantumtale After Life

Undertale (Video Game)
F/F
F/M
M/M
G
Quantumtale After Life
Summary
After a wrong RESET Frisk and Flowey got sent back in time when all her friends were around her age. The souls have been scattered around the Underground and they keep messing with time. After this RESET Sans is now able to control time. Frisk has managed to restore her world from before the RESET after she gathered the SOULS, a new Frisk and Flowey being born. But she and him never left this world. She freed the monsters in this world. She's living alongside her 'new' friends down in the Underground, officially becoming TimeKid!Frisk and we are taking a look into the lives of our Quantumtale friends. (Yes, humans sometimes come to the Underground and monsters go to the Surface).
Note
Sooo~ We'll starte nicely, we're going to take that beautiful one-shot 'Royal Rivalry' by perfectshadow06 (also the creator of this beautiful AU) and i will make it Frisk and Sans.
All Chapters Forward

Tiny skeleton Papyrus

"HEY FRISK??" Frisk who was boxing in her room, thanks to the kind soul of Kat that though: let's get her a boxing bag, turned to Papyrus. Apollo who was sitting in her bed looked up at Papyrus. 

"Oh Papy!! What's up?" She said as she put her hand forward, stopping the bag from swinging. Papyrus smiled at her. 

"YOU SEE...I FOUND THIS AS I WAS CLEANING THE LAB AND...I'M NOT SURE WHAT IT IS..." Apollo sniffed the air and his spine took a weird curve, like a cat getting ready to hiss. Frisk raised a brow as she looked at the tiny bottle with purple liquid in it. 

"Huh...Interesting. Don't know but I think you shouldn't leave it in the kitchen. Who knows what Gaster made this time." Frisk said as she turned back to her boxing. Papyrus shrugged and left the room. He went to the kitchen and put the bottle on the table and decided to get a bottle of juice. 

"GRAPE JUICE...? ISN'T FRISK ALLERGIC? WHO BOUGHT THIS??" Papyrus asked himself but shrugged as he set the bottle down....Maybe a bit too close to the potion. He got a cup and grabbed the bottle...Unless he grabbed the other one? He poured himself some juice and drank. But...it wasn't juice...

"FRISKKKKKK....I THINK I DRANK THE POTION--" Suddenly Papyrus shrunk. he could hear the foot-steps. 

"Papyrus are you ok-- OH MY GOD!" Frisk said as she covered her mouth. Papyrus looked up at her and blinked. He put his arms up. 

"NYEH!!" Frisk made goo-goo eyes at Papyrus. 

"PAPYRUSSSS~ LOOK HOW CUTE YOU ARE YOU LITTLE BEAN~!" Frisk picked him up. She smiled and Papyrus hugged her and laughed. 

"Lookie at youuu~ Ohh...Didn't i tell you not to leave it in the kitchen. Apollo!" The bone monster came as he jumped over the railing and landed on the floor. He sniffed and growled at one of the bottles. Frisk nodded a thank you and took that bottle, throwing it out. 

"Freaking Gaster...Come on, baby. Let's get you dressed." Frisk cooed the baby Papyrus as he babbled cheerfully. It was clear he wasn't used to gentleness. It didn't surprise her one bit. Gaster was pretty straightforward, stiff and analytical. Papyrus was on guard all the time, even when she changed him. He relaxed when they sat on the couch after she changed him. She started playing with toys with him. Apollo was also a good toy. He liked to play with Papyrus. The two were playing on the couch, Papyrus leaned into Frisk's side as she was reading when the door opens. 

"Hello, Frisk. We are back from our shopping trip and why did you text us to get baby food- OH MY GOD!" Gaster said as he entered and spotted Papyrus. Sans gasped and immediately teleported next to Papyrus, his eyes turning to stars. Frisk laughed at that. 

"papy is a smol bean again!!" Gaster groaned. 

"Worst years of my life...when i had TWO eater-poopers." Frisk snorted. Papyrus grabbed Sans finger and then looked at Frisk. He let go of Sans and sat on Frisk lap, bouncing around. Frisk snorted and laughed. He must have liked how flesh felt. He was raised by skeletons after all. Sans frowned. 

"heyyy...that's my girlfriend to bone. shoo." Papyrus looked at his brother confused then looked back at Frisk. She smiled at him and Papyrus just leaned into her to show he wasn't moving. Sans narrowed his sockets, the stars disappearing. Papyrus giggled. Sans snarled and Apollo frowned as well. Frisk shook her head. 

"Alright. I'm going to get some food for him. Apollo, you hungry boy?" Apollo rumbled in delight as Frisk got up. 

"Oh, Gaster! Leave the ingredients on the table. I know it's my turn to cook." She said. Sans and Gaster both narrowed their sockets as Frisk walked away and Papyrus stuck his tongue at them over the shoulder. Sans cracked his knuckles and growled. 


Sans, as usual, was sitting on the couch, playing on his DS. Frisk walked right in front of him and he glanced after her. Papyrus took a toy and threw it at Sans just as she bent down to pick some other toys Papyrus threw around, which distracted him. When he looked back she was getting up. Sans frowned at Papyrus. Papyrus pouted and started crying. Frisk turned around and raised a brow at Sans. Sans gestured frantically. Frisk rolled her eyes laughing. She knelt down. 

"oye bebé~ podrías dejar de llorar por mí?" Frisk cooed in spanish and Papyrus stopped crying. He looked at Frisk intrigued. Sans narrowed his eyes. Apollo looked at Sans and smirked. 

"oh shut up..." Sans said as she looked away, pouting. Frisk was now playing with Papyrus. Her bubbly laughter still making his soul swoon. Apollo gave him a smug look. Sans picked him up with his blue magic and threw him off the couch. Apollo yelped. Frisk frowned at him. 

"Seriously??" She asked, crossing her arms. Sans looked at her chest and smirked. 

"if you'll keep crossing your arms like that? hell yeah~" Frisk face-palmed. 

"i'm stuck with idiotas." Sans chuckled. 


Gaster tried to feed Papyrus and Sans did multiple times as well. He just wouldn't eat. 

"Open your mouth alreadyyy...Ughh....I forgot what a picky eater he is." Gaster said as he rubbed his sockets. 

"Picky eater who?" Frisk asked as she came in a tank top and shorts, still drying her hair with a towel. She went to take a shower 15 minutes ago. Sans and Gaster both pointed at a pouting Papyrus. Frisk clicked her tongue in disapprovement. 

"Another one who won't eat, huh? Alrighty." Frisk got closer and bent to his level. 

"Hi, my love~ Will you eat for me? Come on~ The race car is coming~ Open wideee~" Frisk made the sound of a motor and Papyrus opened his mouth. Frisk smiled as she gave him the food. She twirled the spoon around her fingers just like Sans would twirl his drum-sticks and the two skeletons were left speechless. 

"Do that again! I need to take notes in case I want another demon!" Frisk laughed. Sans gasped. 

"a brother or sister??" Gaster shrugged. 

"This experiment is pretty hard to deduce." Frisk clapped her hands excitedly and Papyrus blew a raspberry. Frisk got another spoon-full when she was sure he swallowed and did the same thing. When Papyrus got tired of cars, she switched to trains and after trains she tried airplanes. She even had to use submarines. Papyrus ate everything and now was sleepy. However, he seemed uncomfortable as Gaster picked him up. 

"Huh...this never happened before...He never ate this much before." Frisk hummed. 

"Give him to me for a bit." Gaster did and Frisk put Papyrus with his head over her shoulder. She rocked the baby and patted him on the back and burped. 

"Just like humans. Now let's go get some sleep, little one." Gaster and Sans watched as she left. 

"She'll make a great mom..." Gaster said. Sans spurted and choked on his ketchup. Gaster laughed.

"Don't tell me you haven't noticed from how she's been taking care of...hell..ALL OF US! Not to mention the twins. I'm getting her as a nanny if my project is a success."

"of course i thought about it but...uhh...still caught me by surprise."

"You check her out everyday. What is there to catch you by surprise?" Apollo looked at both of the skeletons with narrowed sockets as he followed after her. They stiffened. 

"Shit." They both said as they rushed to bribe Apollo not to tell on them. 


"Ughhh..." Frisk said as she fell on the couch. Papyrus was energic as always and Frisk couldn't keep up with the two hour naps and the energy rushes. 

"you ok there, baby bones??" Sans asked, a bit amused. 

"I've dealt with worse-- OW!" She said as Papyrus pulled her hair. 

"Maldito pedazo de mierda! Un demonio, eso es lo que eres!!" Frisk mumbled. She knew she couldn't swear at him in english. Papyrus was the purest one. 

"pfft- watch it. that's my baby bro." Frisk frowned.

"Then you give your baby bro a bath!" She said. Sans rolled his eyes. Frisk got up and picked Papyrus up, groaning as she took him to the bathroom. Sans froze. 

"did she just say...bath? OH HELL NO- FRISK WAIT!!" Sans said as he quickly got up the couch. Apollo laughed at him. Sans stomped his foot and Apollo ran away, still laughing. 


Frisk was on her knees, bathing Papyrus. The tiny baby skeleton was playing with toys in the bath as Frisk was working. He kept squirming an moving. Frisk frowned.

"Oi oi oi!" She said snapping her fingers at him. He looked at her.

"Stay still, please. For me, baby?" She asked. Papyrus smiled and nodded. Frisk sighed and took off a hair-tie from her hand and held it in her mouth. She straightened her back and tied her hair. Sans side-eyed her and smirked. 

"you know~ you could always bathe me as well." Frisk looked at him unimpressed. 

"Si quieres una mano en tu pene...usa el tuyo." Frisk told him. He pouted. She finished bathing Papyrus and he was so lucky to have drenched Frisk in water. He could see her bra and damn~ that view was nice. Frisk dried Papyrus and changed his clothes. Apollo made himself bigger and picked Papyrus by his shirt like he was a cub or a puppy. Frisk got up from her knelt position but slipped. Sans teleported and caught her by the waist before she could slip in the tub. 

"heh~ looks like ya fell for me." He said with a wink. Frisk blushed and looked away, chewing at the inside of her cheek. Sans chuckled and realized the position they were in. They were very close and her leg and between his legs. Anddd he was hard- Frisk snorted at that. Sans looked off to the side, blushing. Gaster sipped loudly in the door. 

"Horny teenagers." He mumbled. That made them both lose balance and they fell in the tub. Gaster started laughing and Frisk looked at Gaster unimpressed. Sans wiped his sockets and opened them. Gaster had left before he noticed their position. Frisk was on top of Sans in a tub. Holy fuuu- Frisk and him were both staring at each other flushing. That's when something pulled Frisk out of the tub. It was Apollo. The bone monster slowly backed away with Frisk's tank top between his teeth, growling. Sans sighed and lowered himself in the tub. There goes his perfect moment. 

"Cockblockedddd~" Gaster said from the door. 

"weren't you overprotective of frisk or something?" Gaster snorted. 

"After getting cockblocked like that? I will have mercy on your mortal soul." He looked unimpressed. 

"i'm not letting you play dnd with frisk, louis, luka, chara and asriel anymore. you're starting to truly act chaotic evil." Gaster frowned. 

"YOU CAN NEVER STOP ME!" Sans flipped the bird and teleported to his room. He was drenched...not only in water but sweat as well. 


"stop making my life a living hell and TURNNNNN BACKKKKK." Sans said on his knees at baby Papyrus. Sans had his head lowered and his hands clasped together. Papyrus was dressed in his old clothes and he was supposed to transform back. Thanks to his magical digestive system...It wasn't as strong as the other times for him to have to sleep it off as well. 

"PLEASEEEE!!" Sans said one more time. 

"BROTHER?? WHY ARE YOU ON YOUR KNEES??" Sans gasped as he looked up. Papyrus was back and rubbing his head. 

"PAPS! THANK FUCKING GOD!!" He said as he hugged Frisk. That's when his sockets went dark. 

"oh my god...I HAVE FRISK FOR MYSELF! YES!" Papyrus looked confused at his brother but he already teleported away. That's when he heard Frisk scream and a loud thud. Papyrus face-palmed. Yup...Something happened. 

"It's good to have you back. You were a baby for almost the whole day and stole Frisk's attention which annoyed our over-protective Sans over there." Papyrus laughed. 

"NOW THAT TRULY MAKES SENSE. WOWIE...I SPENT A DAY IN FRISK'S CARE? OH WAIT! IT'S COMING BACK TO ME! AH- NOW I SEE WHY YOU SAID SHE'S GOOD WITH KIDS..." Gaster chuckled. 

"Yup. Now then...Enjoy the show in 3...2....1.." Sans was kicked out of Frisk's room. 

"YOU PERVERT! I WAS CHANGING!" Sans was flat on the floor. 

"i can die happy." He said giving a thumbs up. The door slammed shut. The two skeletons in the living room laughed. Yup...things were back to normal. 

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