"have a good day at school kid." Sans said and ruffled Frisks hair. The little girl then took Torials hand and the two left on their way to school.

"I AM OFF AS WELL BROTHER."

"going to spaghettore?"

"YES, I AM VERY BUSY NOW! I CAN'T LET MY CUSTOMERS DOWN! THE GREAT PAPYRUS, FOR AS GREAT AS HE ALREADY IS, WILL ALSO BE A GREAT OWNER!"

"heh, well good luck bro." Sans said and waved.

"DON'T YOU WANT TO COME ALONG?"

"nah, i got some things to take care of here."

"ALRIGHT, SEE YOU LATER." Pap said as he walked away. When he turned away sans smile turned into a harsh frown. Now that he actually had a day off from work, and no one else was home he could work on "that".

Sans went around the back of the house and unlocked the door. He liked to believe that he kept this door hidden fairly well. He know Papyrus didn't know about it. Frisk on the other hand may have, but she wouldn't be able to read any of his notes down there anyways. It was all written in windings. Only Sans and Papyrus could read it. Maybe Alphys, but she always avoided his questions on the topic.

Descending the stairs Sans felt something wash over him.

DETERMINATION.

Something told him that today would be the day. Then again he's had that feeling on plenty of days, but nothing happened. Afterwards he would just get depressed and angry at himself. Usually when he was feeling like that he would sit on the couch with Pap and Frisk and be reminded that he already had people who he loved, and while Sans wished his father was still here he smiled in knowing that Gaster still loved him and from somewhere was probably watching over the little family. Sitting together and watching a movie or something, sometimes Sans could swear he felt Gasters presence as he held Frisk, who usually fell asleep halfway through their late night movie sessions.

Sans knew that Gaster wasn't gone though. No, not completely. If Gaster was truly erased from history then the core would have never been built, then Sans and Papyrus would have never been born. Gaster never would have met their mother. He wouldn't have been a single parent after their mother turned to dust. He wasn't gone.

Sans took off his blue hoodie and pulled on his lab coat. Time to start working.

He did it! The machine whirled to life, with bulbs flashing gears spinning. He did it! He was going to get Gaster back.

Br-r-r-rt

CLUNK!

"no, no, no!" Sans pounded his fist angrily against the machine. Something went wrong. He got the machine to turn on before, but he could never keep it on for more than a few seconds. Why? What was he missing? What happened! It had to work. It was GOING to work. Sans wouldn't stop until he had his father back.

He sighed and looked at the clock. Tori would be dropping Frisk off in about a half an hour. "dad...please. help me out here. what can i do? i just want you back." He whispered. Looks like he was done for today. He covered up the machine and started to clean up. He locked the door then went back inside to wash up his bones real quick.

"Daddy! Look!" Frisk said and held up a test she must have gotten back today.

"wow 100 great job kid!"

"Not only that but it was a subject she was struggling in." Tori said.

"nice. come on in. we'll have some ice cream to celebrate."

"I would love to but i'm afraid I have somethings to take care of."

"alright, see ya' tori."

"Bye-Bye Mom!" Frisk said and hugged her legs.

"Goodbye my child, and goodbye Sans."

The two made ice cream sundaes together then sat down on the couch. "so squirt, what do you want to do?"

"We could play a game? or watch a movie?"

"its up to you, your the one who aced your test."

"Hummm….I'm kinda in a movie mood, but i'm sure you don't want to watch Frozen for the fifth time this week."

"it's your call kid. we'll watch whatever yo-"

"I know!" She said excitedly. Sans could swear he saw a light bulb turn on in her head. The girl put her ice cream down and ran up the stairs. "I wanna watch this one!" She said and handed him a DVD case with a black mask on the cover. "We watched a new hope the other day when it was on tv. This is the next on in the series."

"oh yeah, star wars. it was pretty good. tibia honest though i thought you'd want to watch another disney movie."

"Normally yeah, but I want to watch this one because you are my father." she said the last four words in a deep voice. Sans gave her a weird look she just laughed and put the movie in. "You'll get it." She waved him off and sat back down.

"Luke, I am your father." Darth Vader said as Luke yelled about it not being possible. Now he got it. Sans was laying down with his head on the armrest and his body laying across the couch, along with a sleeping Frisk on his chest. The door opened slowly and Papyrus walked in.

"hey bro, how was the restaurant."

"HELLO SANS, EVERYTHING WENT GREAT. SO MANY PEOPLE WANTED TO COME AND EAT WE DIDN'T EVEN HAVE ENOUGH TABLES." Pap explained in the lowest voice he could manage. "PERHAPS YOU SHOULD TAKE HER TO BED."

"yeah, but the box said there's only a few more minutes left of the movie, so i'm gonna finish it first."

"ALRIGHT. WELL I'M HEADING TO BED."

"want me to come read to you."

"TO BE QUITE HONEST WITH YOU I'M SO TIRED I DON'T EVEN THINK I'LL NEED IT TONIGHT."

"alright, night pap."

"NIGHT."

After the movie finished Sans turned everything off and took Frisk to bed. After she was all tucked in Sans checked up on Papyrus, who was sleeping like a baby. Sans looked between his bedroom door and the front door. Should he sleep or go back to working. He had made some rather good progress today. So he chose to go to bed.

Sans woke to the sound of pots and pans banging in the kitchen. "come on pap at least be a bit quieter." He said to no one in particular. Turning on his side Sans looked at the clock. 2:16. No, Pap wouldn't be awake at this time, and he sure as hell wouldn't be cooking right now. Someone was in the house. Sans got up carefully as to not make any noise. He felt his eye start to glow as he walked towards the door. Two of his Gaster Blaster were summoned and followed behind him. Sans quietly descended the stairs and saw the kitchen light on. Sans stood in the doorway looking at the figure from behind. It was tall and completely dressed in black. "hey there bud. do you wanna have a bad time?"

The person turned around and Sans' jaw dropped. It was Gaster. Standing right in front of him. Part of him was screaming that it was only a dream, to not get his hopes up. But another part of him wanted to run over and hug him, asking if this was real or not.

"Hello my son." Gaster said. Sans dropped to his knees, the blasters disappearing.

"i...i don't understand." He said and felt tears start to fall from his eyes.

"I know son." Gaster said and put a hand on Sans' shoulder. "I will explain everything, but first let us get something to eat. Im very hungry."

"y-yeah, um...i'll make you a sandwich."

Sans set the sandwich down on the plate and passed it to Gaster. Sans was still contemplating if this was real or not. Was there some monster that could like shapeshift or something and just wanted to fuck with him. Was he still in bed dreaming? He didn't know anymore. He decided he would figure all this out after hearing his dad's explanation.

"so...um, what happened?"

"I know you've been trying to fix that machine for so long Sans, and believe me I can't thank you enough. As you were trying to help me, I was trying to help both you and myself. Once you got the machine to start working for a few seconds I saw an opportunity. Each time you got it to work, in those few seconds I sent bits and pieces of myself through. You've been working on it for years now, and tonight I was finally able to get the last pieces of myself through. I wanted to show myself to you immediately. I know how you get after you work on the machine. You tend to get upset and depressed. I wanted to show myself and give you the impression that I just stepped through during those seconds, but I couldn't put my body back together. I've been in the lab for the past few hours now trying to pull my body together. I feel like the experiments we did with determination before I disappeared helped a lot. I must say, i've never been so determined in my whole life. But I did it. I pulled my body together, and i'm here now." He smiled and took Sans' hand. Sans looked away and made a painful face. "Whats wrong?"

"i...i just can't believe you're here. i mean, i feel like i'm still asleep in my bed."

"(Sans I am real. I am here, and I am so proud of you.)" Gaster said to him, only this was spoken in windigs.

"dad!" Sans said and hugged him tightly.

After Gaster ate he asked to see Papyrus. Sans took him to his room and Gaster sat on the edge of his bed. "I know he doesn't remember me." He gave a sad smile. "Im sorry i left you with so much responsibility Sans. You know I-"

"dont worry dad. i know." Sans waved him off. "do you want to wake him up?"

"N-No. I've waited years to see him, to see you both. I think I can wait a few more hours until he wakes up."

"alright. well i think there's one more person you should see." Sans said and led Gaster down the hall. He opened the door to Frisks room. "this is frisk. she's the one who broke the barrier and lead us all up here. i took her in as my daughter."

"You must be very proud." Gaster said smiling at the child as he moved some hair from her face. "She's so young and yet she's responsible for our entire race being freed."

"i'm so proud of her. more than she'll ever know."

"Heh, does this make me a grandpa."

"it sure does."

Sans set up the couch so Gaster could get some sleep, he declined this however. He spent so long wanting to see his boys that he didn't want to sleep. Not now, not when he was finally here. Not when he was here on the surface with his two sons and his new granddaughter. Instead Gaster insisted that Sans go to sleep, and promised that he would be here when he woke up. Sans told him that he wouldn't be able to. Not after finding out that all the work he's done for years actually helped save his father. So the two stayed up together. Talking about various things and whatnot. Gaster explained things about the void and how because he split his body apart he lost some memories. Mostly small things, like details from different timelines. Sans just shrugged it off, he said it didn't matter. He was here, that's what mattered, and he would catch Gaster up on anything he needed to know about this timeline, who cared about the rest.

"well, pap should be getting up soon. are you ready?"

"I've never been more ready in my whole life."

Within a half an hour Paps bedroom door opened. The tall skeleton stretched and looked over the balcony at the two other skeletons sitting on the couch.

"UM...SANS WHO IS THAT?"

"pap this is our dad." Sans told him and smiled. Gaster stood up looking at Pap as his jaw hung open.

"D-DAD?"

"Hello my son." Gaster said and out stretched his arms. "I know you don't know me. I disappeared when you were very small but-"

"DAD!" Pap yelled again and ran down the stairs and into his father's arms, knocking the two to the ground with a loud thump. "I-I DO REMEMBER YOU. LITTLE BITS AND PIECES, BUT I DO REMEMBER."

"Whats going on? I heard-" Frisk stopped mid sentence as she stood in her doorway and looked at the three.

"come here kiddo." Sans called her over. She walked down the stairs curiously eyeing the new skeleton. The three surrounded her all wearing warm smiles on their faces. "frisk, this is our dad." She looked at him with wide eyes. Gaster bent down and held out his hand for her to shake.

"It's nice to finally meet you Frisk-" He was cut off as Frisk hugged him tightly.

"It's nice to meet you too grandpa!" Gaster was surprised momentarily, he thought the child wouldn't want to think of him as such, or at the very least not as quickly. None the less, the shock wore off and he embraced the child as well.

"come on, let's all go have some breakfast." Sans said. Gaster lifted Frisk up and carried her into the kitchen as the growing family started to make breakfast together.

A/N: Does this go against canon? Yes. Do I care? No.