The Sansmaster: what's up, kiddo?
_: Sans? Why are you texting me at one a.m.
The Sansmaster: alphys told me you have an astronomy book at your bookstore.
_: Can I ask a few questions? Number one, why are you two talking about this right now. And two, why do you need to know this right now.
The Sansmaster: did i wake u up? sorry. this is important though. alphys and i were talking about science and i need to know if you have an astronomy book still. we were talking about it earlier, though.
_: You didn't... I have a copy or two left at the store. I can probably save one for you if you need it.
The Sansmaster: thanks a skele-ton.
_: Does this mean I get to see you at my work?
The Sansmaster: it might.
_: Undyne isn't going to be pleased.
The Sansmaster: i do get under her scales.
_: You should really get to bed.
The Sansmaster: never. sleep is for the weak.
_: Knock knock.
The Sansmaster: are you trying to seduce me at this time of night? shame on you, _.
_: Haha. Just answer my damn joke, bonehead.
The Sansmaster: who's there?
_: Hugo.
The Sansmaster: hugo who?
_: Hugo to bed now.
The Sansmaster: ok, ok. see you tomorrow? the bookstore on crest street right
_: That's the one.
The Sansmaster: night.
_: Goodnight, Sansypants.

"Okay, okay," Undyne huffed, "Let me get this straight."

You rolled your eyes at your friend, aimlessly putting price stickers on the haul of new books. The books were a wonderful array – full of science fiction, classics, nonfiction, young adult, children's books... It was a bookworm's dream. Owning a bookstore was the dream.

It was just that it felt more like a hassle sometimes.

"Sans," Undyne stared daggers at you, "Sans the skeleton, I might add, texted you around one in the morning asking about a goddamn science book?"
You nodded, "Yep."
"WHY?" Undyne shouted, making an echo go around the store.

You shrugged.

"I don't know."

You lifted your head from your work and were greeted to a judgemental look from Undyne. You stared back for a moment before you started giggling. Undyne rolled her eye back at you.

"That skeleton is one lazy-"
"Lazybones?" You added, knowing Undyne and Papyrus's 'hatred' of awful puns.
Undyne groaned loudly, "_, OH MY GOD. NOT YOU TOO!"

You smiled wider.

"UGH," Undyne slapped her forehead, "I hate Sans... And I hate you too."

Suddenly, you felt awful, praying you didn't upset her, "I-I'm sorry. I didn't mean to say anything wrong..."
Undyne sighed, "You're such a dweeb. I'm just kidding with ya."
You took a deep breath, wiping your palms on your jeans, "...'M sorry."

Undyne shook her head at you, frowning.

"While I," you started before she could say anything, "I don't really know why Sans is coming over, I'm pretty sure it's because of that astronomy book Alphys and you looked at a long time ago."
Undyne lifted an eyebrow, "Huh?"
"On your first day," you said, "Alphys and you looked through a book about astronomy and had commented that your friend Sans would've liked it. I guess Alphys must've told him about it."

"Wait, wait, wait." Undyne seemed genuiley confused, "We told Sans about that months ago."
It was your turn to be surprised, "H-huh?"

Undyne took a moment before responding, "DUDE. OH MY GOD."
You stared at her while she started laughing loudly, clutching her stomach, "What?"

"I can't believe Sans, out of all people..." She said inbetween laughs, "...Ah, screw it!"
"Undyne?" you said quietly, extremely confused.

You watched the fish monster chuckle loudly as she bent over and clutched her stomach. Her laughs filled the entire room, and she even got to the point where she needed to take deep breaths to keep laughing. You stared at her with confusion for the entire time

"Have you guys hung outside of when we do?" Undyne recollected herself, smiling and wheezing mischeviously at you.
You ran a hand through your hair, "I mean. We did once... Sans said he was walking home and he said was wondering if I had made it home okay... And, I um." You felt yourself a bit flush as Undyne stared at you with extreme interest, "He walked me home, and... I... It was, like, four in the morning so... So he just stayed the night at my apartment... A-And then we went to go get breakfast in the morning."

Undyne winked at you, raising her eyebrows curiously, and your felt your face flush even more. Her signature shit eating grin was plastered all over her face.

"U-Undyne!" You jumped up out your chair, looking at her intensely, "It wasn't like that, you pervert! He fell asleep on my couch and I fell asleep on my floor!"
"Wait." She frowned, "The punk let you sleep on the floor?! I'M GOING TO RIP HIS GUTS OUT, JUST YOU WAIT."
Your eyes widened, "Undyne, you're missing what I'm saying! And he doesn't even have guts he's a goddamn skeleton, you dork!"
"NO HUMAN OF MINE WILL BE ALLOWED TO TOLERATE THIS MISTREATMENT," Undyne monolouged, pointing heroically at youl, and you feared she would create another spear. (She had an awful tendency of doing that!)

You shook your head wildly, trying to calm her down, "No, you're so silly! I didn't mean to fall asleep on the floor! By the time I did, Sans was asleep! I don't think he knows that happened anyways."
Undyne looked at you dumbfounded before sighing, "One day, I'm gonna kick that skeleton's ass. It doesn't even matter what for. I just want to."
You laughed awkwardly, relieved, "I don't think skeleton's have asses."

"So, _," Undyne was ignoring your jokes unsurprisingly, "Is that it?"
"Is what it?"

"Have you guys hung out any other time?" Her shit eating grin reappeared.
You felt confused all over again, "No? Why?"

"Do you guys text each other a lot?" Undyne was obviously hiding something, you just weren't sure of what. You decided, by the end of the day, you'd get whatever secret she had out of her.
Even if it killed you. (Which her spears could probably easily do).

You didn't notice it, but Undyne's smile grew wider as she saw the pure determination you showed in your eyes. This was going to be exciting.

"Sometimes," you said confidently, "Not often, I guess. Maybe a little more often than I text you."
"Sans, Sans." Undyne had laced sarcasm in her tone, "Such a ladies man, for sure."

"Why do you keep asking me these questions, you nerd?"
"I NEED TO KNOW SOMETHING, UGHHHHHH."

"Well, just ask me."

"_, YOU ARE MY FRIEND BUT YOU ARE SUCH A PUNK!" Undyne slammed her fist into the counter, "Look. Do you like Sans? YES OR NO?"
Your face went redder than a tomato, "L-Like? Undyne? What? What do you mean by like? Oh my god, U-Undyne. I feel like I'm in eighth grade all over again..."
"Do you have a romantic feeling towards Papyrus's lazy brother, Sans?" Undyne laughed as she saw how red you were getting.
"UNDYNE," You squeaked out, "I hardly know him! The first time I met him, I ended up spilling a bottle of freaking ketchup all over us. The second time, I slapped him so hard that it left a huge bruise on my palm!"

You showed Undyne the healing bruise on your palm, your hand sweaty and shaking.

"Damn!" Undyne looked at it, impressed, "You hit hard! That's AWESOME! Wait. Why did you hit Sans?"
"I was scared, okay!" You felt anxiety come up like a rocket, hitting you hard, "I thought someone was behind me and that they were gonna, like, stab me or something."

You didn't dare look her in the eyes, but you were sure Undyne was staring at you with immense amusement.

"Why are you asking if I like Sans?" You blushed more, staring down at your pile of books and stickers.
"BECAUSE, _, I THINK-"

But before she could finish what she was saying, the familiar chime of the door rung.

You turned to look at the customer and smiled widely. Your face was bright red like a school girl's and Undyne's hands were angrily gripping the counter edges.

"did i walk in on a bad time? i feel a little orcaward."

Undyne groaned loudly and you felt your face blush more (if that was even physically possible).

"SANS!" Undyne ran a hand through her hair, "Goddammit!"
You looked at the fish monster and then to the skeleton, laughing awkwardly, "I think we've just avoided turtle diasaster."
"_!" Undyne glared at you, "You aren't supposed to be incouraging the weird fish puns!"

"aww, undyne, i didn't think i was that big of a pain in the bass," Sans snickered, walking into the store comfortingly.

Undyne rolled her eyes dramatically.

"Are you still wanting that astronomy book?" you smiled, feeling your cheeks burn. You hoped Sans didn't notice the blush (he did).
"gill-ty is charged," He smirked.

You went around the counter and showed Sans to where the books were headed. Undyne was heard groaning loudly as you two shared more fish puns.

You found the astronomy book and placed it into Sans's hands. He smiled widely at you as he went to go look through the pages.
It felt like deja vu, but definitely not in any bad way.

His face turned wide with excitement and you had to stop yourself from giggling like an idiot. If you could introduce someone to a book that they were this excited about every day, you wouldn't even really care about money any more.

Sans stopped for a second flipping through the pages and turned to smile brightly at you, "there's no comet about how awesome this book is."
You smiled at him, "I'm glad you liked it."

You heard Undyne groan loudly again, "GET A ROOM YOU TWO."

Sans's face had a blue hue to it again (if you ever got the courage, you'd have to ask what it meant) and you felt your face heat up again.
Undyne turned to look at you both and snorted.

You two went up to the register and let Sans buy his book. He look enthusiatic about it and you couldn't help from smiling wide at him, much to the dismay of Undyne.

Packing up Sans book, Undyne finally shook her head and spoke: "Sans."
Sans looked towards the fish monster, "yep?"
"Outside. Now."

Sans looked at her with extreme curiosity as Undyne pulled on his jacket sleeve and pulled both of them outside the store.
You stared at them and blinked a few times.

"We'll be back, punk! I need to ask Sansy here a few questions!" Undyne said as she slammed the door behind her.

What.

What the hell just happened?

You took a few moments to assess and figure out why Undyne was acting a little, well, odd that day. It wasn't like of her to really... Well, actually, nevermind. She's kind of always been like this. It was just that Undyne was acting a bit more extreme(?).

A few minutes passed and you figured that they might take a while.

You put on some music quietly and started putting stickers back on your new books.

(a/n: hey guys! sorry this one's a bit shorter, but... you'll understand why later.

and also, hey, i'm getting a beta reader! it might mean chapters take a little longer to post, but only by a day or two at most. honestly though, i feel overwhelmed with all of this positive feedback i've been given. thank each and every one of you to the bottom of my heart.

if you guys would like to talk to me or have fanart for this fic, please send it to me at icyleaves on tumblr.

and please leave a comment telling me what you think of this fic so far! i hope i've been doing a good job :* )