Chapter one:
"Thanks for helping me out with this paperwork Sans." Undyne speaks up with full gratitude as the two work on their stacks of paper.
"It's no problem Undyne." Sans assures her as he moves the one he had just finished off to the side. "I mean I am usually in quite a bit of the underground so I think it was good that you asked me."
"Yeah I know. It's like you have a bunch of posts in the underground." Undyne confirms putting the paper she finished aside. "So you really were the best choice for this." She reads what's on the paper in front of her as she finishes speaking.
"Yeah I kinda do." Sans agrees before the two fall silent continuing to work. He somewhat enjoys paperwork because then he doesn't have to really do much.
The only sound heard in Undynes kitchen is the soft rustling of paper and the soft breaths of the two monsters. The place is otherwise so quiet that it almost seems like a lonely silence.
Undynes eyes skirt over the text on the paper in front of her but she swears she handed all in this subject to Sans. She shrugs it off as a slight mix up since it has nothing to do with what was on the last page. She wordlessly hands it or Sans holding it in front of his face on his right, it is the side she's sitting beside after all. She blinks in confused surprise as after a moment Sans had not grabbed the paper. She turns to him and slightly moves it closer to his face but he doesn't even react. Her work suddenly forgotten she decides to try something wondering what exactly she's witnessing. She moves the paper to go to an angle towards Sans's left eye and as soon as it is in front of his eye he reacts.
Sans blinks and very slightly jumps then takes the paper. "Ah. Is something wrong with this paper?" He asks taking a look at it then he blinks in realization. "Oh. I was wondering where this one ended up. It seemed like a part of the last page was missing."
"Yeah." Undyne responds not really processing what's around her as she replays what just happened in her mind over and over again. She tries to look at it in every angle she can but it all ends up to the same thing in the end. "It can't be... Could it?" She questions really quietly to herself not wanting Sans to hear her. She turns to her papers trying to get back to work but what she had seen is still bugging her. She decides that she has to look more into this new development about one of her dear friends.
The two of them do end up finishing the paper work but it is now kind of late when they finish.
"Do you just want to stay the night?" Undyne asks turning to look to Sans as they stand there. She has her hands on her hips while she is still clad in her usual relaxation clothes that she's been in all along.
"Nah. Thanks but Paps is probably waiting for me. He does this whenever I'm out late, even if I tell him." Sans waves it off. "Don't want to worry him too much."
"Okay." Undyne agrees. "Then I'll see you tomorrow. Just be careful."
"Will do." Sans responds in a goodbye tone then he heads off with that leaving Undyne standing there by the entrance to her home. He of course made sure that the door was closed behind himself and he heads off on his way to go home.
About halfway there Bonetrousle begins playing letting Sans know that it is his brother calling him. So he picks up while continuing to walk.
"Hey bro. What's up?" He asks causally not missing a single step.
"Brother are you coming home yet?" Papyrus questions with a hint of worry in his voice.
"Yeah I am. I'm walking there as we speak." Sans confirms closing his eyes for a moment with a smile before opening his eyes smile still in place.
"Oh great!" Papyrus's tone picks up into a much more happy one. "How far are you?"
"Won't be long now." Sans responds to the other. "I could always take a shortcut to be back faster."
"I would like that." Papyrus admits.
"Okay. I'll be back in a second." Sans confirms then they hang up and he teleports to their house.
The moment he appears in the living room Papyrus comes running over to him in which Sans greets him with a smile.
Sans is quickly scooped up into Papyrus's arms and he accepts it wrapping his legs around the others torso as best as possible and his arms around his neck.
It's not uncommon for them to be like this with Papyrus holding and carrying Sans. It's so common that no one bats an eye whenever they see the two do it. It's become a normal for them.
"Let's go to your room Papyrus." Sans suggests. "I think this calls for some fluffy bunny. Besides you need to get some sleep."
"Yes of course. It is time for a bed time story." Papyrus agrees and carries Sans upstairs heading right to his room. He places Sans down to sit on the bed. "Here. Since I need to change I'll get the book." He tells the other who nods softly.
"Sounds good Paps." Sans glances down as he slightly kicks his feet that are hanging over the edge. He knows that neither of them care about being naked in front of each other.
After all they've taken baths together, changed in front of each other and Papyrus even had Sans strip so he could wash his clothes. They're so comfortable that they can walk to their rooms not really wearing anything after a shower. They've seen each other's bodies enough that it's nothing new to them.
Sans glances up watching Papyrus put on the long sleeved shirt used for bed time.
It's a simple orange pyjama shirt with mahogany pyjama pants to go with it. That's Papyrus's pyjamas, he only has one pair of pyjamas.
With that all done Papyrus grabs the book then heads over to the bed handing it to Sans before climbing onto the bed.
"Okay Paps get comfortable." Sans tells Papyrus who gets under the covers settling in nicely. He opens the book once his brother has settled in. "Okay here we go Paps." He begins to read the story out loud making sure Papyrus can see the pictures as that's most of the story. "Fluffy bunny and his brother are playing a game. Where is Fluffy bunny? Fluffy bunny is hiding. Fluffy bunny's brother looks for him. Fluffy bunny can't be found. Can you see Fluffy bunny?"
"There he is by the tree!" Papyrus points at the page.
"Good job bro." Sans congratulates. "Oh look. Fluffy bunny is by the tree."
"Peek a boo!" Sans and Papyrus say in unison and Papyrus covers his eyes then moves his hands to reveal his eyes.
Sans continues reading. "Fluffy bunny hides again. Fluffy bunny's brother looks for Fluffy bunny. Where is Fluffy bunny? Can you see Fluffy bunny?"
"Oh! Oh! There!" Papyrus points again in excitement. "Behind that rock!"
"Yup." Sans confirms. "Oh look. Fluffy bunny is by the rock."
"Peek a boo!" The two speak together as Papyrus hides his eyes only to reveal them once more.
"Fluffy bunny hides again. Fluffy bunny's brother must find Fluffy bunny. Where is Fluffy bunny? Can you see Fluffy bunny?" Sans pauses to allow Papyrus to answer the books question.
"Under that bush!" Papyrus responds beaming in excitement.
"Mhm." Sans nods in confirmation. "Oh look. Fluffy bunny is by the bush."
"Peek a boo!" They match each other in time and Sans holds back a chuckle as Papyrus does the usual movement once again.
Sans turns the page to continue. "Fluffy bunny hides again. Fluffy bunny's brother looks for Fluffy bunny. Where is Fluffy bunny? Can you see Fluffy bunny?"
Papyrus nods and points at the image on the page almost ready to bounce in his bed. "In the flowers!"
Sans nods stars to bring the book up a little. "Oh look. Fluffy bunny is by the flowers."
"Peek a boo!" They repeat in unison as Sans does a similar motion that Papyrus does but he covers his face with the book then moves it down.
"Fluffy bunny hides one last time." Sans can see Papyrus's excitement is starting to peak and it makes him just smile more than he already is. "Fluffy bunny's brother must find Flufy bunny. Where is Fluffy bunny? Can you see Fluffy bunny?" He questions his brother who nods with enthusiasm for a second before pointing at the book.
"There! By the pond!"
"Oh look. Is that Fluffy bunny?" Sans smiles widely.
"Peek a boo!" The repeat is done one last time still in unison and they both do their little motions.
"It's Mama bunny. Mama bunny says it's time for food." Sans pauses a second to chuckle slightly as Papyrus slightly jumps before he continues. "Fluffy bunny and Fluffy bunny's brother now go inside to have food. Goodbye Fluffy bunny."
"Goodbye Fluffy bunny." Papyrus waves bye with a smile and Sans closes the book.
"The ending still got you huh?" Sans lightly teases.
"Such an ending always gets the great Papyrus! I have learned that it is unavoidable!"
"Yeah. Even if something does get you you're still the coolest brother ever." Sans uses his magic to put the book away. He makes sure that after he's done making sure he's comfortable he leans towards the other placing a kiss on his forehead. "Good night Papyrus."
"Good night Sans." Papyrus's eyes droop closed and as she slightly rolls onto his side he drifts off into the land of sleep.
Sans leaves the room quietly and shuts the door almost all the way only to head to his own room. He stuffs his hands into his pockets as he walks. "What a day." He slightly yawns to himself as he walks. He makes it to his room heading inside and shutting the door almost all the way behind himself. He leaves it open a little to try to listen for Papyrus. He's always done this since they were younger so if Papyrus had a nightmare there's a better chance of him hearing his brother. He crawls onto his bed and lays his head down going to sleep himself.