Spike the dragon, the noble yet witty companion to the glorious Princess Twilight Sparkle and the savior of the Crystal Empire, was bored out of his young draconic mind.

Why, you may ask?

It's simple, really. He had been left alone in his home, Golden Oaks Library, with a list of chores that needed to be done before Twilight got back from her research in the Canterlot Archives. A very very long list of the most boring chores he could think of. Sweeping, dusting, shelving, re-shelving, dusting again, cataloging, alphabetizing... you get the picture.

It wasn't that though; he could get all of that done in almost no time. Heck, he'd already finished most of it, just had another round of dusting to get done and then triple-check the catalog and he'd be done.

No, what really got him down was the knowledge that even if he finished his chores right away, he'd have nothing to do. Rarity was away at some fashion show, so he couldn't bask in her glory. He couldn't hang out with the Cutie Mark Crusaders because they were on a field trip.

He had nothing to do.

Sighing to himself, he lifted himself off of his seat on the couch and decided that he might as well get back to dusting. All he could hope was that something would come up to relieve this immense boredom. At this point, a Changeling invasion would have been a welcome change of pace for the young drake...

Spike groaned to himself. He had just finished the last of the chores when it hit him like a well-aimed kick from a pissed-off Big Macintosh: he had forgotten to clean The Mirror.

Not just any mirror; The Mirror. That mysterious relic Twilight had found in the deepest parts of the abandoned castle deep within the Everfree Forest. The very item Twilight had rushed off to Canterlot to research, in order to get a better understanding of its currently unknown magical properties.

The Mirror that was still coated in so much dirt and grime that you probably wouldn't even know it was a mirror at first glance.

Yay...

Spike made his way to the basement laboratory, grumbling to himself, duster in claw as he descended the stairs. There it was in the far corner: tall and somewhat imposing, with an ornate frame and utterly filthy glass.

"Well, Spike old boy, better get this over with..." he mumbled to himself, resigned to his boring and likely frustrating fate.

As he scrubbed and dusted off the glass, revealing some of its shining features, he noticed there was something off about the reflection. He couldn't quite put his claw on it, but... well, he had cleaning to do, no time to worry about that just yet. "Mind's probably playing tricks on me..." he sighed. He looked around, swearing he'd heard a faint voice just then. Damn I hate this basement! Always freaks me out...

After about half an hour of intense cleaning, The Mirror finally had some shine back in it. Satisfied with it for the time being, he decided to use the moment to do one of his favorite past-times: posing. As he looked himself over, flexing and grinning, he realized what was so odd about the mirror: it was inverted. Unlike normal mirrors, when he raised his right hand, the reflection raised it's right hand. He decided to test it further. After finding a piece of paper lying around, he held it up to the mirror to display the writing on it. Sure enough, instead of being backwards, the words in the reflection were still normal.

"Huh... weird..." he said before looking around, eye's wide. He was sure he had heard someone speaking at the exact same moment as him. It was clearer now, but still a bit muffled.

"Is someone there? Who is that? Quit messing with me!" Each word he spoke was echoed in perfect sync by the strange voice. Finally, he looked to The Mirror, and his reflection looked back.

"Is that you? Are you talking?" both Spike and the reflection asked. Sure enough, the sound was somehow coming through The Mirror.

Spike and his reflection stared at each other for a moment. Then they both stepped forward. Then they both stepped back. Then to one side, then the other. After doing this and several other meaningless gestures, Spike finally got up close to this mirror image and, after a brief pause, placed his hand against the glass as his reflection did the same.

He first felt cold glass in his palm... and then a brief second later, his hand sunk into the glass, coming into contact with something warm, scaly, and very much alive.

Instead of jumping back in fear like most would, Spike let out a loud "Ah-HA!" and locked grips with his reflection as the Mirror-Spike did the same. The two locked into a battle of strength, both trying to bring the other onto their side. Spike shuddered as his arms briefly phased through the glass, then retaliated, bringing a similar reaction from his counterpart. Finally, with a well-timed tug, Spike sent his doppelganger tumbling out onto him.

"Gotcha!" he shouted, this time not receiving a response.

"Yeah, you got me, faker. Big deal!" the other Spike replied after a moment.

Then both blinked at each other in confusion. Their voices were... different. The mirror-image had a slightly higher pitched voice. Out of curiosity, both dragons sniffed at the other. Spike's eyes widened as he recognized the scent... of a female dragon. And judging from her eyes, she'd just found the opposite for him.

"Wow... so that's what I'd look like..." both mumbled in awe, staring awkwardly at each other.

Spike blushed as he realized something. "Um... could you please... uh... get off of me?"

"Oh, uh... yeah, sure..." the young dragoness stammered as she pulled away from him, letting him up. "Um... I'm Spines, by the way."

"I'm Spike. Wow... so... we're really the same dragon, only..." he trailed off...

... only to be continued by Spines. "... different genders. Yeah... looks like it."

Spike looked over his female self. She was slightly shorter and slimmer than Spike, though she still seemed a bit pudgy to him. The spines running over the back of her head were smoother than Spike's, and he noted that her face had only slightly more feminine features. Then his gaze drifted down... and he saw her slit. Her vagina, her pussy, her sex organs, her privates, her...

He mentally slapped himself out of it. He blushed at the thoughts that had run though his head. He had seen pictures of dragon 'parts' before in an anatomy book Twilight had let him read once, but this was the first time seeing one for himself, in the flesh. Too late, he realized that he was getting... excited.

Out of his own crotch, slipping through a slit of his own, came his penis. Not that long, but average for a drake his age. He blanked at that moment. His cock was showing itself to a girl! Usually he was able to keep it down but...

Spike rapidly tried to think of something to say, something to cover him and make this less painfully awkward. Thankfully, Spines did it for him.

"Wow... so that's... what that looks like. Neat."

"Uh... yeah. Neat... so wow, a whole other world where everyone's a different gender, how about that, right?" he lamely asked, desperate to change the subject.

"Yeah... oh my Celestia, Dusk is totally gonna flip when he finds this out! I mean, a whole other world, just a mirror away! Oh... wow, Dusk and Elusive would be mares here... wow... that's... weird to think about..."

"Yeah... not sure if I'd want to see Twilight and Rarity as colts... doubt they'd be as pretty as you!"

Spike froze as he realized what came out of his mouth. Shoot! I meant to say mine, just say that and fix this oh crap oh crap oh...

"You really think I'm pretty?" Spines blurted out, blushing fiercely all of a sudden.

"Uh... yeah. You are. I've never seen a dragon as pretty as you before." (Hey, it was the truth. He's literally never seen a dragoness before now).

Spines shuffled her feet and smiled. "Well, I've never seen a dragon as cute as you before." She suddenly froze, apparently just realizing what she'd said.

"Wow... thanks!"

"Uh... no problem!"

For a moment, they both stood there, blushing and avoiding eye contact. Spike suddenly wanted to get closer to this girl, even if she was him. He wanted to, but he...

"Hey, uh, Spike! I've got an idea that will make our Du-... I mean... our alicorn friends happy! Let's um... let's... experiment? Explore each other? Just uh, just to see the differences of course!"

"Wha-... Oh! Oh yeah, that's a great idea! Yeah, let's uh, let's do that!"

Both dragons, nervous yet intent on seeing this through, came up to one another. "So uh..." Spike stammered, "I just... uh... put it in?"

"Um... I... guess so... yeah..."

The two anxious young dragons got together, with Spike's erection pointing to Spine's slightly dampened slit (she'd be lying if she said she didn't get just as turned on as Spike did).

"Alright... here I go then!" With that, Spike worked up his courage and slid his reptilian prick into her folds, eliciting a slight gasp from them both. Neither had ever had sex before, so this was a first, a new feeling for the two counterparts.

Spike unsure of himself, started to pull out... but at the feeling, and the way Spine moaned at that, he got the idea, and slid back in. Gently and slowly, he slid his cock back and forth inside her, the damp, hot, tightness feeling amazing against the sensitive organ. Oh goddesses... so that's what its like! Spine's moans grew in intensity as his gentle thrusts found a nice rhythm. "Oooh, Spike... yes..."

Spike grunted, picking up the pace slightly. He still wasn't sure what he was doing, but whatever it was, he must have been doing it right for it to feel this good.

Suddenly, a gush of hot liquid flooded around his cock. Before he could ask, Spines let out a sigh. "Wow... so that's what an... uh... an orgi... an orgus... so that's what cumming feels like... wow..."

He wasn't quite sure whether to keep going or not, but he could feel a slight pressure building up inside him. Figuring that he should try to... cum... too, he resumed his gentle thrusts, much to Spines delight. "Oh yeah! Again!" She let out another pleasured moan as he fucked her just a little harder, in hopes of getting himself off.

"C'mon... you got this..." he grumbled to himself, pushing a little farther, but still not wanting to go too far in any way. He could feel that pressure rising, and the sound of Spines moaning helped drive it on. He pushed on, quickening his tempo a bit and going a little harder, bringing pleasant reactions from his partner.

"Oh Spike! I-I'm gonna... I'm gonna... I-"

She came over his cock for the second time. Spike didn't stop this time. He was so close himself, he knew it. He just had to finish. He wanted to know what it felt like too! He could feel the hot folds of her pussy clenching as she came, as if it were trying to milk him and get him to cum too.

Finally, he felt it rising. He felt himself about to blow. And that's when he remembered what he'd read about stallions and mares... and he pulled out, terrified of releasing into her.

Hot, draconic seed burst forth from his little friend, splattering onto the floor, onto himself, but mostly onto Spines. Spike felt... amazing. Never before had he been through anything so breath-taking, so intense. Needless to say, he loved it!

He looked to Spines and blushed at how dirty he'd gotten her. "Oh... uh, hey, you want to use the bath? Think you'd need it more than me right now..."

"Yeah..." she responded with a light chuckle, "That'd be great..."

After getting Spines clean of all cum and the area in front of the mirror cleared up, the two dragons pulled together for an embrace. They hugged, and Spike briefly considered kissing Spines... but decided against it. For now.

"I'll see you again, right?" he asked, slightly sad to see her go.

"You know it, big guy! And next time, it'll be on my side!"

After pulling apart, Spines went up to The Mirror and pushed through, the glass warping around her as she traveled back home. Spike went up to it after her, and the two waved to one another, smiling at their new found friend.

Spike and Spines both put the finishing touches to their side of The Mirror, cleaning away the last of the grime to give way to a clean shine. With that, their work was done, and all they had to do was part ways. Twilight (and Dusk) would be home soon. And chances were they'd want to see the mirror for themselves. So with a sad parting wave, the two left their basements, vanishing from the view of each other.

Sure enough, about half an hour later, a gruff, tired, and decidedly ungroomed Princess soon trotted into the library, grunting a greeting to Spike. "I'm turning in early Spike. I may have spent too much time researching, and I couldn't catch any sleep on the way here. If there's anything going on, tell me in the morning. I don't want to deal with it right now..."

Spike blinked, opened his mouth to speak, then promptly shut it. It was best not to bug Twilight when she got like this. So, he let it be. Besides, maybe it would be best to keep that a secret for now... no telling how she'd react to hearing he had gotten laid with... well, 'himself'. Probably best to let her see The Mirror for herself.

Spike groaned into his hands. Things had been looking so well. He had become friends-with-benefits with a female version of himself that, to be honest, he thought he might be in love with, and now this.

When Twilight had gone down to examine the mirror, it had been just ordinary, reflective glass. No portal, no Prince Dusk Shine, and no hint of magic at all.

It was then that she shared what she'd learned from those days of research.

"The mirror is a portal, much like the other mirror in the Crystal Empire. Only this one leads to a completely different world. I couldn't gather much about it from the texts, but from what I can tell it's much more similar to our own than that. Unfortunately, there's a catch. Instead of working in a cycle like the Human world mirror, opening every thirty moons, this mirror opens and stays open until somepony has crossed from one side to the other and back. After that, it shuts down for ten years to recharge on the ambient magic in the general area. A much less efficient design if you ask me. At least the Human mirror was scheduled. Ah well, in any case it seems the mirror's lost its magic with time. It didn't react at all to my presence. Well, it's still a nice mirror. Might as well keep it as a memento, right Spike?

Twilight had left to catch up with her friends, leaving Spike to think. He wouldn't see Spines again. He'd never be able to fulfill that promise to see her again on her side of the mirror.

No... that's not true...

He pounded his fist into his hand, suddenly determined. That portal opens in another ten years? Fine. I can wait until then. Dragons live long lives. We'll both still be around by then. We will see each other again. No matter what.

Ten years later...

Spike the dragon, current owner of Golden Oaks Library (Twilight had to move to a kingdom of her own about three years ago. Celestia's orders) and closest friend to Princess Twilight Sparkle, unfurled from his bed with a yawn. Ten years had been good to him. Gone was the chubby little baby dragon, now replaced by a lithe teenager, notably larger than the average stallion, with a faint trace of hardened muscle beneath his armor-like scales. He had no wings (apparently he was a wingless variety) but he didn't mind. He made up for it well enough with his strength and looks.

As he'd grown older, many of the young (and some of the more mature as well) mares around Ponyville began to pay more attention to him, wanting to feel the strong embrace of the tame, intelligent dragon. And with many of them he had obliged. Rarely did he go for more than a one night stand, though.

He was saving that level of attention for someone else.

Smiling, he placed a closed sign on the front door of the library and descended into the basement.

It was that day. The day he'd been waiting for for ten long years.

He went up to The Mirror and flexed, smiling at the sight before him.

In The Mirror was a lovely dragoness with purple scales and a long green fringe. Her lithe form had a slight curve to it, with just the right amount of mass in her hips and thighs to make her downright sexy in Spike's eyes.

Spines posed sexily, giggling at the dragon boy before placing a clawed hand on the mirror. Spike mimicked, and felt his hand push into hers. They wrapped their fingers together, and without a second thought, Spike slipped through the glass, ready for the long awaited round two.

Author's Note

Well, that was fun to write! Did that all in one shot!

This one goes out to EverfreeSparkle. They asked for Spike and R63 Spike (Spines) to have some young vanilla sex. Well, here you go! Hope you like it, and sorry for the wait!