Having searched the corridors of Canterlot High School for Lyra without any success, Twilight Sparkle finally managed to spot two familiar faces standing at the side of the school sports field. "Sunset! Rainbow!" she shouted, running over to them.

"Twilight!" they both called, pulling her into a hug.

Sunset looked at Twilight with concern. "If you've come here, there must be some reason. Has something terrible slipped through the portal to our world? A manticorn? A sea monster? Parasprites?! Twittermites?!"

Twilight put her hands on Sunset's shoulders to calm her. "Yes, sort of. I'm trying to track down a visitor to this world from Equestria, but she's just a pony, and I don't think she's any threat. She's a primary school music teacher."

"Who's a what, now?" came a familiar voice from behind Twilight.

"Applejack!" she said, spinning around to greet her friend. Applejack had arrived with Fluttershy, each carrying bows, and not the kind you'd tie in your hair. Twilight gestured towards the bows. "What's all this about?"

"Oh, Twilight, these? We just got back from archery practice," Fluttershy said softly.

Twilight raised her eyebrows. "Archery? Since when have you two been into archery? I've never seen you with bows and arrows."

Applejack rested her bow against a wall. "We've been into archery since forever, sugarcube."

Twilight looked at Sunset and Rainbow Dash who nodded their confirmation. "Why didn't I know that?"

Sunset shrugged. "You've only spent, what, a couple of weeks total in this world, and you were pretty occupied during those times. There are probably a lot of things you don't know about us."

Twilight scratched her head. "I suppose so. But the Applejack in my world has never expessed any interest in archery. Not that I know of, anyway. I just assumed you'd be the same."

"Now, I've never been to Equestria, sweetie," Applejack answered, "but from what you've told us, there are a lot of parallels between the ponies there and the students at our school. But it stands to reason there are going to be differences too. I mean, ponies ain't exactly going to be good at archery, are they?" Applejack held her hands up. "With hooves?"

Twilight giggled. "You'd be surprised what a pony can do with hooves."

"And besides, even if your Applejack and me were born destined to live parallel lives, we're all products of our experience, aren't we? If there's a human Twilight Sparkle out there somewhere, she hasn't lived the same life as you. She might be a very different person."

Twilight hadn't thought of it like that before. What if there were another Twilight Sparkle in this world? There was doubles of all her Ponyville friends here, and the princesses — maybe others as well. In a way it would be weirder if there wasn't another Twilight Sparkle. "I suppose you're right, Applejack."

A blur of pink whizzed past and crashed into Rainbow Dash. Rainbow stumbled and fell into Applejack, and they both ended up on the floor. Sunset Shimmer and Twilight Sparkle pulled the two fallen girls up.

"You're really improving, Pinkie," Sunset said encouragingly to Pinkie, who was now sitting with her back to the wall, taking her skates off.

Twilight leaned over towards Sunset and whispered, "she's awful!"

Sunset whispered back so that Pinkie couldn't overhear. "Yes, but this is still a massive improvement over before."

Rarity skated to a graceful stop beside them. "Why, Twilight, darling, what a wonderful surprise? Whatever are you doing here?"

"Rarity!" Twilight cried, throwing her arms around the girl and almost knocking her off her skates.

After they'd each had sufficient hugs, Twilight explained the situation again. "A pony from Equestria managed to get through the portal and I believe she's arrived in your world. She's not any threat, she's just a music teacher, but I think she has some… weird ideas about humans. I need to track her down and convince her to come back home."

Sunset shuffled nervously and looked at Twilight. Nopony had ever come to try to convince her to return to Equestria. Though she wasn't sure she wanted to return anyway.

Twilight continued. "Anyway, her mane is green and white. She's called Lyra Heart—"

"Heartstrings! I know Lyra!" Pinkie squealed.

"Of course," Rainbow Dash said, "so do I. She used to hang around with me quite a lot when we first started at CHS. I think she had a bit of a crush on me… but who could blame her?"

Applejack tutted and rolled her eyes.

Twilight thought for a moment. "So you must know the human version of Lyra. Where can we find her? She might be able to give us some kind of clue as to where my Lyra has gone to."

"What makes you think that she knows anything about your Lyra?" Sunset asked.

Twilight shook her head. "She probably doesn't, but I've searched the school and found nothing. I don't know what else to try. Maybe she won't have seen anything, but I have to at least ask."

Pinkie shrugged. "I don't know. She and Bon Bon were in English class this morning, but I haven't seen them since. I know they skipped maths. I don't blame them — Mr Donkey can be so cranky, but—"

"Do they normally skip classes?" Twilight asked.

"Not Bon Bon, no. She's very conscientious," Pinkie answered.

Applejack raised her eyebrows. "Since when have you been usin' fancy words like that?"

"I've been reading the dictionary. It was under 'C'…"

"Do you think they'll be back tomorrow?" Twilight asked, bringing the conversation back around to a more pressing matter than Pinkie Pie's vocabulary.

Pinkie shrugged again. "How should I know? You could go and ask them."

"You know where they live?" Twilight asked.

Pinkie nodded. "It's too far to walk though. You'll need to get somebody to give you a lift."

Twilight wasn't sure what she meant. If it was too far to walk, why would anyone want to pick her up and carry her there?

Sunset put an arm around Twilight. "Me and Robert can give you a lift."

Twilight wasn't sure who Robert was. "O… kay?"

"Road trip!" Pinkie cried.

"Hold on a minute," Twilight said, "I don't want to overwhelm Lyra with people." Nor did she want to overwhelm people with Lyra. "I think it might be best if just us ponies go." She nodded towards Sunset.

The girls were disappointed, but understood. Sunset and Pinkie discussed how to get to Lyra's apartment, and Twilight soon found herself being led to a car park behind the school by Sunset Shimmer.

"I've missed you, you know?" Sunset said as they walked through the car park.

Twilight smiled at Sunset and took her hand. "I've missed you too. But we write, don't we?"

"I write. I sometimes get a response a few days later." They walked along together, hand in hand.

Twilight stopped. "I'm sorry. There's a lot I have to do in Equestria. But I do think about you."

Sunset looked away. "It's okay. I understand." She realized that perhaps this wasn't the best subject for her to have brought up. "Robert's over this way."

Twilight felt a flutter in her heart. It felt strange that Sunset had this whole new relationship that she wasn't a part of. Why haven't you mentioned anything about him when you've written? Twilight sighed. "It's good that you've found a boyfriend. I guess that means you won't be returning to Equestria any time soon. I hope Robert knows what a lucky guy he is. You—"

Sunset broke out in laughter. "Robert isn't a guy! Come on, let me show you!" She took Twilight by the hand and ran towards the far end of the car park.

There was nobody else around. Sunset stopped by a large shiny dark plastic shape. She bent down and lifted a corner of it; it turned out to be a plastic sheet. As the sheet was pulled back, it revealed a large black machine underneath. It had two wheels, like the bicycles Twilight was familiar with from home, but it was much larger and covered in pipes and machinery. "And this is a Robert?" Twilight asked, open jawed.

Sunset laughed. "No, it's a motorbike. I just call it Robert because I think it's fun to give it a name."

Twilight giggled. "Okay, a motorbike. I see, like a bike with a motor. Intriguing."

Sunset retrieved a pair of helmets from a storage section underneath the seat of the motorbike, climbed onto it, and put a helmet on. She patted the area behind her. "Hop on, Sparkle!"

Twilight cautiously approached the machine, accepting the helmet that Sunset offered her. She hitched up her skirt slightly and carefully sat on the hard plastic seat behind Sunset.

"Now, don't be frightened. Robert can be a little loud." Suddenly the machine sprung to life, making a loud growling sound, like a pride of angry manticores. The bike shook beneath them.

"It vibrates a lot, doesn't it?!" Twilight yelled into Sunset's ear.

Sunset shouted back, "V-twin engine!" Twilight had no clue what that meant. "Good isn't it?" Sunset added.

"Good?!" Twilight exclaimed. "Why would it be good? It's annoying. Plus it means your engine is not being properly efficient. Energy that could be used to propel this vehicle forward is instead being disipated as noise and vibration."

"Don't forget heat!" Sunset shouted, and the machine lunged forward, carrying the pair out of the car park and onto the road.

The machine crawled along the city streets, the hard seat below them vibrating like crazy. The bike made a terrible sound, like it was suffering. Other bikes whizzed past, going at twice the speed and making a fraction of the noise. "Are you sure you know what you're doing?!" Twilight yelled into Sunset's ear.

"Of course, Sparkle. I've been riding for nearly two weeks! I just don't know all the gears and stuff."

"Two weeks?!" Twilight's grip around Sunset's waist tightened as she clung on for dear life.

Sunset turned onto a much wider road, several lanes across, and accelerated right up until the bike's engine seemed to start resonating, increasing the vibrations dramatically. Twilight closed her eyes and buried her face in Sunset's shoulder.

She began to notice that the vibrating seat felt really good against her crotch, the thin cotton panties she was wearing providing almost no padding against the hard plastic seat. She scooted back on the seat a couple of inches before tilting her hips forward to press her pussy down against the seat.

What in Celestia's name am I doing? she thought to herself. I shouldn't be thinking about this? Not when I'm with Sunset. And not when Lyra's potentially in trouble. But it did feel good. And she could feel her body responding to the stimulation, her pussy moistening.

She slipped a hand under Sunset's leather jacket. There was just Sunset's t-shirt between her hand and her stomach. Sunset's not going to think that's weird, is she? It's not like I'm feeling her naked flesh. Wait, why am I even thinking about feeling her naked flesh? Sunset's just a friend.

Sunset pulled over and brought the bike to a standstill before switching off the engine. The vibrations shuddered to a halt. "You can let go now, Twilight… Twilight?"

"S-Sorry," Twilight stammered, letting go of Sunset's waist.

Sunset hopped off the bike and turned to look at Twilight, who was climbing off the bike, seemingly a little wobbly at the knees. Sunset smirked. "Didn't I tell you that vibration was a good thing?"

Twilight blushed and smoothed her skirt down. "I… err… I guess it has its advantages."

"Yeah, I always have to carry a change of underwear with me since I bought that bike." Sunset chuckled and turned to study the building numbers. "Here, it's this building," she said, walking over to a nearby door.

Sunset pushed the door and it swung open. It was clearly meant to be protected by an intercom system that allowed residents to buzz visitors in, but the lock seemed broken. She consulted the names by the Intercom buttons and spotted a fairly recently written 'S Drops & L Heartstrings' which contrasted with the faded colour of the rest. She noted down the flat number and held the door open for Twilight.

Twilight and Sunset stood outside the flat and Twilight nervously knocked on the door. A few moments later, the door was opened by a messy-haired girl wearing a dressing gown. She looked like Lyra, but neither Twilight nor Sunset knew which Lyra.

"Twilight Sparkle? Sunset Shimmer? What are you guys doing here?"

Twilight squinted at the girl, trying to figure her out. The real Lyra — her Lyra — wouldn't need to ask that question. "Is she here then?"

Lyra thought about lying, but somewhat defiantly, decided to tell the truth. "She's here, yes."

"Can we come in then?" Twilight asked, not wanting to have this conversation in the corridor.

Lyra stepped aside. "Sure."

The two ex-unicorns stepped into the small flat and took a look around. The other Lyra, along with a girl Twilight realized must be the human version of Sweetie Drops stepped into the room from the opposite doorway, each wearing dressing gowns. It seemed like an odd choice of attire at this time of day, but Twilight wasn't exactly familiar with human customs with regards to clothing, so didn't mention anything. She did notice Sunset raise her eyebrows though.

"Lyra, we need to talk," Twilight said sternly.

Lyra didn't seem especially surprised that Twilight had turned up. "I'm sorry, Princess Twilight, but I had to come. I know I should have asked, but…" Her voice trailed off, a look of sadness on her face. "Can you forgive me?"

Twilight's demeanour softened. "I'm not here to shout at you, Lyra. Look, I think we need to talk… pony to pony." She turned to Lyra's human counterpart. "Is there somewhere we can talk… privately?"

The human Lyra gestured towards the door that Lyra had just emerged from. Lyra and Twilight headed for the other room, Sunset Shimmer following behind. Twilight stopped her by the door. "I'm sorry, Sunset, this is between Lyra and I."

* * *

"Why, Lyra?" Twilight asked, sitting on the edge of the bed.

Lyra sat on a comfortable armchair a few feet away. "You, better than anypony except Bon Bon, should know that. You know how I feel about humans."

Twilight shook her head and sighed. "But it could have been dangerous. You could have been hurt. Sweetie has been so worried about you."

Lyra laid back in the armchair. The mention of her marefriend's name had stung. In all this, she'd barely given her a moment's thought.

She blinked away the beginnings of a tear from her eye. "You're such a hypocrite, Twilight! Do you really think your friends at home weren't worried about you when you came here? I've spoken to Rarity when she's come to pick up Sweetie Belle after her music lessons. She worries about you when you've gone to Canterlot for a couple of days. How do you think she feels about you going to a parallel universe?!"

"I guess… I—" Twilight stammered.

But Lyra wasn't finished yet. "And aren't you the pony that's always encouraging everypony to learn?! To value knowledge and discovery?! Because that's why I'm here. To learn about this world."

Lyra looked away from Twilight. She knew she'd been too harsh.

Twilight sat in silence for a while before speaking calmly. "So, Lyra, tell me what you've learnt."

Lyra looked up and gave Twilight a cautious smile. "Aside from getting used to this body…" Twilight nodded encouragingly. "I've learnt that humans wear clothes, and they sometimes don't like it if you watch them when they're not wearing clothes." Twilight raised her eyebrows. "I've learnt that humans don't have cutie marks." Twilight nodded, remembering when she'd noticed that herself. "And that humans can grow pony ears."

"What?!" Twilight interrupted in surprise.

"You didn't know?" said Lyra, smiling slyly.

"Well, I did… it–it's happened to me. But it only happens in the presence of powerful sources of magic. How did it happen to you?"

Lyra hesitated. "I… ummm… sex?"

Twilight's jaw fell open. "Lyra… you've been here… what… less than 24 hours? And you've had sex?! Who with?! Not…" Twilight looked towards the doorway. "With her?! With the human Sweetie Drops?"

"Maybe with both of them?" Lyra winced for the inevitable barrage of shouting, which didn't come.

She looked up at Twilight who was instead regarding her curiously. "Do you think you could show me?" the princess asked.

"Me? W–with you?" Lyra stammered. Maybe Pinkie had been right?

"No! Just… you know… just show me on yourself."

Lyra began to stand up. "Oh, okay," she answered casually, "I'll just go and get her."

Twilight held out her hand to stop her. "No, not her yourself. Just yourself yourself."

Lyra realized what she meant. "Ohhhhh… okay." She paused and blushed slightly. "Do you want me to take my dressing gown off?"

Twilight chuckled. "You're already starting to think like a human. Lyra, I've seen you naked hundreds of times."

Lyra smiled and laughed. "Oh, yeah, I suppose you have."

She stood, and untied the dressing gown cord, then slipped the garment off over her shoulders. It fell onto the floor in a crumpled heap. She sat back on the armchair, lifting her feet up by her buttocks into a squatting-like position, with her legs apart. "Now… umm… I might not be very good at this. I'm still learning."

Twilight nodded and shifted sideways on the bed a little to get a better view. In her two visits to Equestria before, she hadn't really had time for 'pleasure'. Her thoughts drifted towards Sunset. Surely she must know something about this? She'd been in this world for years. A girl like that must have had offers, and even if she didn't, then in the privacy of her own room… Twilight, pull yourself together. You need to pay attention here.

Lyra parted her lower lips with the fingers of her left hand, exposing her delicate pink pussy. She used two fingers of the other hand to rub it just below her clit, but found it rather dry. She put the fingers to her mouth, sucking on them for a moment and enjoying the feeling of her tongue in the gap between her fingers, and then returned them to her pussy, covered in saliva.

After rubbing up and down her slit a few times, Lyra pushed the fingers inside her tight pussy. It felt strange having Twilight watching, so she closed her eyes and pretended she wasn't there.

A few thrusts later, Lyra could feel her pussy start to lubricate itself. Her left hand went to her right breast and started kneeding it beneath her palm.

Twilight Sparkle watched while Lyra masturbated in front of her. Yes, she'd seen Lyra naked plenty of times before — that was perfectly normal in Equestria — but never in this body, and never doing this. She had expected to be able to observe this impartially, but found herself getting aroused watching Lyra pleasure herself in front of her. Twilight's hand moved down between her legs and started to rub at her own pussy. If I keep my hand outside my panties, above the fabric, then it isn't really wrong, is it?

Lyra's fingers now moved in and out of her pussy at a steady speed, each withdrawl resulting in a slick squelch and a few drops of her juices trickling onto the seat below her. With her eyes still closed, she could almost forget that the princess was watching her, and she started to really enjoy herself. She tilted her hips up slightly to get better access. Her two fingers were penetrating as deeply as they could, stopped from going deeper only by the knuckles of her remaining fingers.

Twilight knew she shouldn't be enjoying herself like this while she watched Lyra, but she couldn't help it. Her hand rubbed the cotton of her panties up and down, and she could feel them getting damper. This was all Sunset's fault, she was sure of it — Sunset and that motorbike, getting her all hot and bothered.

Lyra moved her fingers faster and faster inside herself. By chance she brushed against a particularly sensitive spot at the front of her pussy, making her quiver with pleasure, so she curled her fingers slighty to make better contact with that area. She pinched her nipples between the fingers of her other hand, alternating between breasts, each pinch bringing pleasure, but hard enough to deliver just a tiny bit of pain too.

Orgasm seemed so close for Lyra now. Her left hand abandoned her breasts and darted down to massage her tingling clit, each stroke feeling like a tiny spark of electricity, bringing her closer to her peak. Her pussy drizzled liquid while her fingers plunged its warm depths.

When her climax came, she moaned and shuddered. She felt a tingle and a warmth in her ears. A shockwave swept over her body and her pussy clamped down on her fingers, squeezing them rhythmically. She kept going for as long as she could before the pleasure became too unbearable and she had to stop.

She opened her eyes to the sight of Twilight smoothing down her dress, and noticed a pink flush to the princess's cheeks. Lyra rested for a moment before asking, "so, did you see it?" She started licking her fingers clean.

"Yes, it was… umm… impressive, Lyra," Twilight answered, "but your ears didn't do anything."

"What?!" Lyra cried.

"They didn't do anything. They're just normal human ears."

"But before… ask Lyra and Bon Bon!" Lyra threw her hands in the air.

Twilight shrugged. "I… umm, okay… let's go talk to them. Maybe put your dressing gown back on first, though?"

The two girls opened the door to face Sunset, Lyra, and Sweetie Drops together.

Author's Note

Robert was inspired by Everything for a Princess.

"W–with you?" Lyra stammered. Maybe Pinkie had been right?

This is a reference back to the first chapter set in Equestria, where Pinkie Pie had been spreading rumours about Twilight having a crush on Lyra.