"...So, do you understand your mission, Sans?" Celestia opened her eyes to see the sleeping form of the monster-turned-pony, "I should have expected as much," Her horn began to glow, bringing a bucket of water above his head. She tipped the bucket quickly, but the pony was no longer asleep and rolled out of the way of the water. She glared at him, "I'll get you one of these days. Did you hear everything I said?"

He suppressed a yawn, "Yeah yeah, go after your old student, get the crown, and keep peace. One question though, why can't your new student do this?"

Celestia frowned, "I would, but I'm afraid that may cause jealousy to take over Sunset's heart and cause a mishap with the element. You're my best choice for this mission. You know these creatures better than anypony alive and I still have a country to run with Luna. I can get a replacement for you for the next few days, but I need your help."

Sans smirked, "And what's in it for me? As much as I'd love to run into another new universe, I don't work for free. I believe my rates are 5g an hour for interdimensional travel with 10g paid up front in case of a medical emergency. Y'know, in case the plan of running face first into a mirror ‘goes to pieces.'" Somewhere, a rimshot was heard.

Celestia rolled her eyes, "You will be compensated for your time, you know this. You've helped me before."

"True. Welp, guess I should get going then. See ya, sun butt." Sans jumped through the mirror before Celestia could register the nickname.

He could feel his body changing and morphing into the creature he'd heard so much about in his previous world. Surprisingly for him, the transformation didn't seem to hurt, and it certainly helped that he'd been bipedal for most of his life, allowing him to make a fairly smooth transition into a human body.

Once the transformation was complete, Sans could step out of the portal and into the other world. Upon doing so, he took a moment to examine himself; pure white skin, dark blue hair and some very familiar shorts and jacket. He noticed he was close to a high school, a decent place to hide out if he was running from an authority, especially an authority from another world. It's unfortunate, then, that Equestria recently obtained their own interdimensional traveler in the form of a comedic skeleton.

Sans nonchalantly walked over to the high school and knocked on the front doors before quickly realizing they were open and letting himself in. There was not a single person in the halls, likely because they were all in class, but it was eerie nonetheless right up until the bell for classes ending rang. A few hundred students made their way to their destinations and Sans quickly realized he never asked Celestia for a description of the perpetrator. Sighing to himself, he elected to talk to the first person he saw.

"'Scuse me, miss, you wouldn't happen to know a person named Sunset Shimmer, would you?" The red and yellow haired girl took a peek at the shorter adult and stifled a chuckle.

"Snrrk. Hey, shorty. You looking for your mommy or something? I don't know who you're trying to find in a high school of all places." She closed her locker and attempted to walk away, but the pale skinned man seemingly appeared in front of her.

"Yeah, that's not happening Miss Shimmer. I'm gonna have to ask you to come with me."

The red-head outright laughed at this, "Okay, this was entertaining. I don't know who you are, but we don't have anyone on the police force who are actually competent. Now, you may want to start explaining who you are and what you want or things may get violent." Sunset narrowed her eyes at the shorter man, but it was his turn to laugh.

"Ol' sun horse shoulda told me more about you before sending me here; you're feisty, huh?" Sunset's eyes narrowed further, seemingly in confusion, "Not a problem. I may be a bit out of my 'element,' but I'm always down for a fight. That is, if you don't want to hand back the crown now. I'd much prefer that. Less work for me and you'll get back to your life quicker."

That set her off, "Excuse me?! How do you know about the-" Her eyes widened in realization, "How did you... But you didn't... No, that's impossible. I'm the only Equestrian to come to this side of the mirror." She began to laugh, "Yeah! You can't be here! You walk too well to be an Equestrian and you used the word 'person' earlier!" Sans just looked on as she kept speaking, "She was supposed to send the magic bearer, not some random guy! Does she honestly think I'm that little of a threat to her utopia?!"

Finally, Sans interrupted, "Hmm. That expression..."

"What?"

"That's the look of someone bearing the weight of the world."

"Excuse me?"

Sans looked into her eyes, "Or, at the very least, had bore the weight and failed to overcome it. Perhaps had a falling out with a certain teacher when you couldn't live up to expectations?"

"I'll have you know- GAH! Why am I even bothering with you?! Celestia was a great teacher thank you very much! Shows what YOU know about her!"

"Who said anything about her?"

"Come again?"

Sans opened the door to an empty classroom, "C'mon. I have a feeling we need to talk."

Sunset’s rage was so high her body was failing to contain it, passing out right then and there. Sans caught her using the gravity magic he retained from his trip to Equestria and set her down in one of the chairs.

Sunset was the first to wake, stretching her limbs and looking outside, she could see it was currently her namesake. Across from her was the Equestrian who had caused her mass confusion. Who was this figure? Why hadn't she heard of him on any of her espionage missions? Why was he sent instead of her prized pupil? She stopped before her brain began to hurt again.

"Feeling better?"

"A bit, and-" She stopped and stared at the previously sleeping man.

"Ah, right. Perhaps we should start over," Sans held out his left hand, "The name's Sans. Sans the skeleton."

Sunset, on instinct, batted his hand away, hitting the whoopee cushion and startling her out of her seat. The "skeleton" began to laugh.

"The ol' whoopee cushion in the hand trick. It's always funny." Sunset glared, "Ah well, not everyone gets this type of humor. So... Why don't you tell me about your past with Celestia?"

"And why would I do that? I still have the location of the element--"

"Oh, that? Nah, I found that while you were asleep." Sunset's gaped, "What? Did you think I'd just sleep here until you woke up? I still had a job to do. Now, however, I'm off the clock."

"And how do I know you're not bluffing?"

"Because your principal is standing right behind you." Sure enough, principal Celestia was, in fact, behind her when she turned around.

"...oh."

Principal Celestia shook her head, "Sunset... I'll be honest, I'm not entirely certain what to say in this situation. I tried to help you adjust to the school, but to think you could and actually pulled off such a heist... It hurts. It really, truly hurts."

"P-princ- uh, principal-" Sunset tried to speak, but was interrupted by Celestia.

"You don't mean to say 'principal,' do you. Sunset, what happened to you to make you this way?" Before Sunset could respond, it was Sans who spoke up.

“You ain’t getting anything out of her.”

“Pardon?”

Sans shook his head, “Nothing substantial at least. She’s not ready to talk.”

“I appreciate your help on this, however, as the principal of this school and the one who helped her adjust, her well being falls under my jurisdiction.”

“Yeah, but I’ve got orders to keep the peace. That includes her peace. I’m good at reading expression. Had that ability even back in my world. Suffice it to say, she’s not-“

Sunset spoke up, “Uh, excuse me? What… do you mean ‘your world?’”

“Ah. Right. You see, I’m not from Equestria initially. Honestly, I’m not even human nor pony. Used to be a skeleton til I did something wrong and made it there by accident. Sun horse is researching ways to get back. Should ask for an update soon actually.”

“So… you can’t… see your family?”

Sans gave a sad smile, “If I could, I’d bring him here. My bro would love this place. Filled with humans to solve his puzzles.” He chuckled for a moment, his expression turning somber before smiling once more, “Ah, but we’re talking about you. Tell you what. I’ll come up here once a week, see you and sun human,” Celestia quizzically glanced at Sans, “ask you about your day, all that pizazz. We can just talk about our lives. You tell me about yours, I’ll tell you about mine, ‘kay?”

Sunset looked at the strange creature across from her. Seeing his expression talking about his family… she felt a mild kinship towards him.

“…fine. Once a week. Saturday then?”

“Saturday’s busy. Sunday works best for me.”

“I… guess I’ll see you then.”

Sans stood up from his chair and stretched, “I’ll miss this jacket. Welp. See ya.”

Celestia put a hand on his shoulder, “Is… that it? You’re just gonna go?”

“Yeah. I mean, if you want to do something more, you can do so, but I’ve done all I’ve come for. I wanna take a nap.

Celestia sighed, “Very well then. Have a good night, Sans.”

“You too, lady.”

And then he was gone.

“Sup.”

“Don’t you ‘sup’ me brother! You still haven’t recalibrated! Your! Puzzles!”

“Heh. Sorry bro. Been a long day, but don’t worry. I got a ton of work done today... A skele-ton.”

“…”

“Bro?”

“…”

“Hey bro? You there?”

“I apologize for the interruption, Sans.” The world shifted to a nightscape.

He looked back at his pony self, “It’s fine. What’s up? I don’t recall having a nightmare, so there’s probably something you want.”

“Well, not I per se, more my sister, using me to obtain your information. She hath interrupted three dreams thus far and I would rather enjoy my work in peace.”

Sans cringed, “Oh, sorry about that. You know me, staying up all day makes me ‘bone’ tired.”

“I’m almost certain that is not true, thou art the only pony who forced me to work in the day time.”

He cringed harder, “O-oh, I was not aware of that-“

The lunar diarch chuckled, “We jest, Sir Comic. Do not tell my sister, but when we dream walk, our physical body rests as well. We enjoy the extra hours of sleep.”

Sans let out a chuckle, “Not fair how you can do your job and sleep at the same time.”

“You have your gifts and we have ours.”

“Anyways, Sunset situation is solved. Gonna meet up with her every Sunday to just talk about our lives. Told her about where I came from and she seems to have resonated with my story.”

“My sister will be most pleased to hear her favorite student will be doing well. I shall leave you be now.”

Sans nodded, “‘Kay, see ya.”

“Um, see you?” He nodded again, “See you, Sir Sans!”

Luna disappeared and Sans was left to his dream.

“SAAAAAAANS!”

Author's Note

I had this in the drafts for an actual year. Kinda stopped writing for a while tbh. And then I re-read my stories and actually thought most of them still held up. I wasn’t aware that this story had a basically complete draft, so I patched it up a bit and now here you go! Only took me a few minutes to edit but I figured it’s been long enough.

ko-fi

Takes place 1 year and 9 months after he arrived.