Disclaimer: I don't own Undertale. Let me know what you guys think and if you want trivia.

Frisk's fingers moved over her phone and that yellow button. Something about it had seemed familiar to her, but at the same time, the magic was completely foreign. She was confused and nearly knocked into the nice cream guy and smiled at the sight of him, thinking about the cool snack.

"Hey! It's you! Business is great here. These fellas bought all my ice cream!" He grinned, but Frisk nearly frowned.

"All of it?"

"Yeah, I'm sold out of everything, but oh wait! I got something for you."

"You do?" Frisk smiled, wondering just what snack could possibly be left only to see the guy continuously smiling at her. "Um…."

"See! A big smile!"

"Yeah...that's...great." Frisk tried to return it and sighed as she turned to see the two guards from before. It took her a moment to push down her nervousness at the sight of the Knight's armor. She gave them a quick smile before hurrying up the stairs, with a deep breath she made it to the top and blinked at the sight of a blue hoodie at the corner of the building.

"Sans?" Frisk couldn't help the smile growing over her face as she went over to the skeleton. Her cheeks even began to hurt, and she tried her best not to move too fast.

Someone's happy and suddenly has energy…

Hush, you! Frisk's eyes narrowed, and she heard the chuckle in front of her, as a blush came over her. She looked in front of her, noticing that she made it up to Sans.

"hey. so, i heard you're going to the core. how about grabbing some dinner with me first?" Sans gave a wider grin, and Frisk blanked out.

He...He...asked me to…dinner...he…asked me on a date...he...he...

He's going to think you're a moron if you never answer….

Frisk growled at that, then noticed the slight rise of Sans bow ridge as Frisk's cheeks heated up. "I mean yes."

"great, thanks for treating me." He chuckled with a wink and Frisk got over her blushing enough to roll her eyes at the skeleton.

"Whatever, Sans." She laughed until she felt a nudge against her as he moved past her.

"over here. i know a shortcut."

She smiled at his antics, coming closer to him as she felt his magic go over them both and she gasped at the sight of the restaurant inside. She suddenly felt not dressed up enough for such a place, but knowing Sans was in his usual blue hoodie, shorts and slippers calmed her nerves as she picked up a menu.

"so…" She looked up; his tone no longer had its usual playfulness. He leaned back in his chair, hands still in his pockets as he kept talking to her. "well, here we are…"

"Yeah." She nodded to him, watching his penlight eyes roam over her as silence seemed to take over the spot. She could barely see many others around; their spot was private and secluded. "Sans…"

"your journey's almost over, huh…?"

Frisk's eyes snapped over to him, no longer looking at everyone else as she watched the skeleton. Her mouth opened to say something, but the realization that he was right hung over her head. And she felt no closer to a solution.

"I guess it is…" Her voice was quiet, and she let the menu lay down, trying not to frown as she heard Sans let out a long exhale.

"you must really wanna go home…" He looked at her, and Frisk looked away, this moment felt sad to her.

"It's complicated…I just...I mean..."

"hey." He interrupted her, and she looked over at him, to see him do a lazy shrug, but she could tell there was more to it as he gave a chuckle that sounded hollow to her ears. "i know the feeling, buddo."

"It's buddo, now?" She laughed a bit but wondered what exactly he meant. "What happened to kid?" she joked, watching him shrug again. And her laughter started to die down as she looked over the phone Toriel gave her then over to Sans to see him looking away from her.

"though...maybe…" His voice softened, and she wasn't sure what to make of this new tone she was hearing out of him.

"Sans?"

"maybe sometimes it's better to take what's given to you." His eyes found hers, and she found it hard to look away. "down here you've already got food, drinks, friends…."

"But…"

"is what you have to do…really worth it?" He looked at her longer and Frisk felt speechless as her mind went to her mother. Her town that was above ground. She swallowed, not knowing what to say next as a hand went over her face.

"I… I don't…" She looked up, peering back as Sans looked away at everywhere but her and she watched his shoulders sag. For a moment, she was sure he looked defeated. She didn't like it. His sockets had closed, and she struggled with what to say next.

"It's really complicated, and I ju-

He interrupted quickly, smiling at her and Frisk thought it was fake. "ah, forget it." He laughed, sitting back. "i'm rootin' for ya, kid."

And like that, I'm back to kid…. Frisk sighed, not wanting to look at him anymore as she played with her phone instead. Her finger went over that yellow button, trying to understand it until she felt eyes staring dead at her and she looked up at the unreadable expression on Sans face. His eyes roamed over the button, and suddenly it felt cold in the room.

"let me tell you a story…" His voice seemed distant and lacked any emotion as he looked at her. Frisk started to feel uneasy as she looked at him.

"Okay…" She said softly, hoping she could figure out what just happened.

"so i'm a sentry in snowdin forest, right?" She nodded as he continued. "i sit out there and watch for humans. it's kinda boring," he chuckled, but it sounded off to Frisk.

"Sans are...you okay?" She asked carefully, only to receive a wink.

"fortunately, deep in the forest... there's this huge locked door, and it's perfect for practicing knock-knock jokes."

"A huge door?" Frisk repeated as he gave a nod, and she felt certain he meant Toriel.

"so one day, i'm knocking 'em out like usual. i knock on the door and say "knock knock " and suddenly from the other side, i hear a woman's voice."

Definitely Toriel…

"anyway, she says "who is there?" and so naturally i respond "dishes." and she says, "dishes who". so i say "dishes a bad joke." Sans chuckled and gave a wink, but he still seemed distant to her. "would you believe she just howls with laughter? it's like it's the best joke she's heard in hundreds of years…"

Probably was…" Frisk murmured to herself as she nearly missed as Sans continued.

"so i keep 'em coming, and she keeps laughing. she's the best audience i ever had. then after a dozen of em she's the one knocking, and she says "knock, knock" and i say who's there". she says, "old lady" and I say, "old lady who"." Sans starts laughing again. "so she says "oh, i didn't know you know how to yodel."

"Right…" Frisk mumbled, feeling more uncomfortable by the moment as she started to look around. It felt like she was talking to someone else, and not the same laid-back guy from before as he continued talking.

"it was just wow...but needless to say, this woman was extremely good. so of course, we kept telling each other jokes for hours."

"Of course, you did. Why did you bother stopping?"

"well, eventually i had to leave. papyrus gets kinda cranky without his bedtime story."

"I can see that," Frisk chuckled, a small smile coming to her face and she swore she saw a look pass over San's face.

"but she told me to come by again, so i did."

Frisk's eyes slightly narrowed and she eyed the skeleton, "Good for you. Became the best of friends?"

"well, i did again. and again. it's a thing now, ya know." He leaned in as she fought the urge to move away. His eyes went to the phone again as he went quiet and he looked at it, like a bad memory until his eyes were on her. "telling bad jokes through the door, it rules." He looked at her, riling her jealousy further.

"Get to the point, Sans." Frisk swallowed, her eyes on him as it went silent and they both stared at each other. She breathed out, steeling herself for whatever came next, watching as his gaze soften as it went to the phone again, and turned into something else.

"the point is…" He turned back to face her. "one day, i noticed she wasn't laughing very much. i asked her what was up, and she told me something strange. she said, "if a human ever comes through this door, could you please, please promise me something? watch over them, protect them, will you not?" "

Frisk swallowed and nodded, "And…?"

"i hate making promises and this woman...i don't even know her name. but someone who sincerely likes bad jokes has an integrity you can't say "no" to." Sans said quietly until he looked away, his penlight eyes were on the floor.

"Just say it…" Frisk breathed and watched as he turned around, his gaze went to the phone.

"do you get what i'm saying? that promise i made to her...you know what would have happened if she hadn't said anything? buddy..." he breathed out and looked away, but in the corner of her eye, she could see sockets devoid of penlights as talked slowly. "...You'd be dead where you stand

"Glad to know how you feel…" Frisk said quietly, as she went to move only to be kept in place by Sans hand as he grabbed hers to keep her in place.

"hey, lighten up, bucko." His laugh was a bit nervous, as Frisk stared at him. "i'm just jokin' with you." Frisk looked away, and his grip tightened on her hand, "besides...haven't i done a great job protecting you? i mean, look at yourself, you haven't died a single time." He chuckled nervously, as though the realization of his actions hit him, but Frisk only gave a look, that had him quickly shut up.

"hey, what's that look supposed to mean?" He looked her over, his grip loosening. "am i wrong…?" he asked quietly, and Frisk just gave him a shrug.

"Guess you wouldn't be doing a good job for your bestie at the door, if you were. Huh?" Frisk smiled, knowing it was an ugly one as she felt Sans let her go completely and his hands slid into his pockets as he looked away from her.

"heh…" He gave a nod, starting to walk off and Frisk was determined not to cry, ignoring as his voice carried a hidden tone. "well, that's all...take care of yourself, kid…cause...someone really cares about you." He added quietly, and rushed out leaving Frisk with her thoughts as she closed her eyes.

Frisk, I think he really does like you...you and I both know something happened to make him act like that. Something about the phone maybe, and it's yellow magic. Frisk, are you listening to me?

I don't want to talk about him anymore...Frisk interrupted, feeling exhausted as ever as she made her way through the resort, wanting to sleep and forget today happened.