Flurry Heart looked back at her beloved cousin and teacher with an eager smile. She reared back to stand on her back hooves, clenching her teenage ass as she carefully stepped to the edge of the bed. Her cute multi-coloured tail swished with each step, showing off her tight rear for the dragon behind her.

The top of her rear legs collided with the firm mattress first as she flopped over. Her belly landed with a soft thud as she barely sunk into the mattress, then her head careful not to fall on her horn. She slowly let her hind legs spread, slowly revealing her plump filly lips and puckered ponut to the world, letting her sex teacher take in the view of her royal nethers.

Spike looked over her pretty pink fur, the way it looked softer than any unicorn, earth pony, or pegasi, the way it melted into her delicious looking pussy, the way it turned almost purple as it transitioned to her most filthy of holes. He watched as her tail flicked up over her back, leaving her completely unprotected. He watched her wings slowly start to extend as she anticipated just what he would do with her tonight, a sheet glistening fluids coating her cunt confirming those desires. She would be nearly any pony's dream, and that’s before you considered she would inherit the crystal empire in time.

But Spike was already starting to get used to this from his cousin. He rolled his eyes as he slowly approached her, placing a claw on her tail to keep it out of the way. He leaned down to the princess, pressing his chest to her back as he leaned in close to her ear, his hot draconic breath causing it to twitch a little. With a low growl, he whispered into her ear, “Dumbass.”

He used his free claw to swiftly smack her precious pink ass cheeks before pulling away from her, grabbing the bags they brought from the entrance to their room and tossing them on the bed beside the princess of sex. “Help me unpack and then we can have some fun.”

Flurry yelped as he spanked her, but after sitting with the stinging pain for a moment, she began to think it wasn’t as bad as she thought it was. Actually, spike spanking her felt kinda good actually. She’d have to remember that for later. She whined as Spike pulled away from her and asked for help on something not involving him putting his dick in her. “Unpack? But we’re finally alone. You can give me more lessons about sex.”

“Alright, lesson whatever this is. You have fun once the work is done.” Spike began to pull out his clothes from his bag and store them in the small, rough looking dresser beside the bed. Luckily Rarity had given him some heavy cloaks to keep warm in case he and Twilight needed to venture out while in the Crystal Empire, and an extra layer underneath would probably prevent him from getting too cold and trying to hibernate.

“Can’t I just do it later? Or even better, you could just do me.” She wiggled her butt for Spike to see, her tight rear gently clapping together.

“Don’t make me spank you again Flurry.” Spike threw the rest of his clothes in the dresser, leaving just the few extra things he brought with him to the Empire. It seemed like Twilight also put some of her stuff in his bag as well, as along with his bag of dice and Ogres and Oubliettes rulebook, he had a small rack of potions he definitely didn’t pack. Looking at them, it wasn’t clear what they were since even though Twilight labeled them, her writing was almost completely illegible. He just hoped she wouldn’t need them any time soon. With his stuff stored, he pushed his bag to the side and moved to begin doing Flurry’s next

As he started to unzip it though, Flurry quickly rolled over and pressed the bag shut. “W-what are you doing? You can’t just go through my stuff.”

“Well if you’re not gonna unpack your stuff then I will.” He rolls her back away and finishes unzipping the bag.

With a push from her rather stiff wings, she leaps off the bed and lands right on top of the bag. She wrapped her legs around it and refused to let Spike have it. “I’ve got private things in here, I’ll do it when I’m ready.”

“You literally were just showing me your pussy and asking me to fuck you and now you’re shy?” Spike asked as he relented, not trying to separate the princess from her stuff. “If it’s your moms smut books I don’t even want to know about them.”

“No, it’s just… Personal.” Flurry admitted as she moved the bag off to the corner. “Maybe I’ll tell you after another lesson or two. It has been a while since you’ve taught me anything new, professor cousin.”

Spike blushed as he caught himself leaning to the side and checking out Flurry’s flank at the mention of another lesson. She was gonna get him killed if she kept this up, either from repressed lust or her parents when they got caught. He shifted as he tried to keep his composure. “You’re not gonna let me out of it again are you. Okay, I guess we can have another lesson tonight. After I’ve gotten everything else set up for our stay. Why don’t you go bathe before we start.”

Flurry huffed about her delayed lesson, but she accepted her mentor’s advice and made her way to the exit. “Fine, fine, but if I see any of my things moved, there will be consequences.” She opened the door and vanished down the hall.

Spike sighed as he grabbed a quill and a paper to write a report down, only to catch Flurry poking her head back in to the room as she made sure he wasn’t touching her stuff. “I’m not gonna touch it. Go do your business.”

Part of the difference between Yak design and Pony design was a focus on communal spaces. Though the Princess’ room was private, it was slightly more expensive than the alternative communal bedroom. Additionally, rooms with private baths weren’t even an option, only access to this block’s bath house behind the inn. Ultimately cheaper than staying at a pony hotel, but not for everyone.

For the princess though, it was amazing to see how normal people lived. People not trapped in the stuffy halls of the Crystal Castle, free to do as they please, to not have their days scheduled and, yes, to bathe normally. No servant waiting just outside the door to ensure your safety and comfort, no rose petals and no oils, just whatever made you happy. It was a normal way to end a normal day she would never be able to have.

The simple structure hid no elegance, the wooden building contained an inlaid wooden tub large enough to comfortably sit 8 ponies or slightly fewer yaks and the ground around the tub was an equally common wood. Despite the chill outside, it felt comfortably warm inside the bath house.

The tub sat empty, so Flurry saw no reason not to enjoy herself. She closed the door to the outside, backed up until her haunches pressed to the door, and then ran towards the tub and jumped in. She couldn’t help but smile to herself as she started to splash around in the water that comfortably came up to her neck. Just like the temperature inside the building, the water was also quite warm, though thinking she may have jumped into freezing water did make her rethink her previous actions.

As the warm water washed over her and she let herself settle in for some alone time, she took in her surroundings and finally, after so many years, let herself feel free.

“Ahhhh…” Flurry sighed as she backed up against the wall, sitting and just enjoying the sensation. “I love this.”

Flurry’s alone time could only last so long though, as the front door opened and a yak came into the bath house. Her thick coat was laced with colourful beads and she carried a small basket of amenities. The burst of chilly air caused her to look at the filly coming to join her.

Flurry opened her mouth to speak, but the yak cut her off, “Hello pink pony. I’ve never seen one of you in the bath house before.”

“Really? This place is amazing. If I lived here, I would be here every night to just relax.”

The yak gave her a strange look before plodding her way to the edge of the tub, placing her basket on the edge and slowly lowering herself in. “It’s no better than any other bath. Papa makes sure of that.”

“Papa?”

“Yes, papa. I believe you call them daddy or father…”

“No, I know what you meant, I meant to ask how your papa maintains the water here.” Flurry returned to her comfortable seated position as the conversation flowed naturally.

“Ah, he is the chief of Yagreb. For now, at least.”

“Oh, cool. I’m kinda the daughter of a chief as well back home. I’m Flurry Heart.” She kindly extended her hoof to the yak expecting it to be shaken, only for the yack to bump it instead.

“Valerie, daughter of Val and Halla. Pardon my asking Flurried Heart, but where is your soap?”

“Wait, that’s not like, a provided thing? I thought it would be here.”

Valerie laughed at Flurry’s clear inexperience and naivety. “No, you must bring your own. You may use mine for now, but I need to use it too.” Valerie fished the bar of soap from her basket and closed the distance between them, offering the soap to Flurry.

“You’re amazing Val. Thanks.” Flurry magically took the bar from her and smiled.

“Val? Valerie, Flurried Heart.” She looked at Flurry strangely as she corrected her.

“Oh, sorry, Val is just like, short for Valerie. It’s like a nickname, you know.

“I am not, no.”

“It’s a thing friends do. You can just call me Flurry as well, or any nickname that suits.”

“Hmm, interesting, though that is also my papa’s name Flurried Heart… Flurry.”

The two went back and forth for a while, the two enjoying their bath time together until it came time for Flurry to wash her mane. Apparently, shampoo wasn’t a standard washing kit for a yak, and neither was a towel since they had so much fur it would still keep them warm. Flurry wasn’t too keen on walking back out to the inn drenched, so she eventually retreated from the water to the edge of the pool while Valerie kept chatting.

“Flurry, may I ask you for help?”

“Of course, how can I help you?” Flurry perked up at the request. It had only been a few dozen minutes they had known each other, but if it was something to do with others than most assuredly this could be the friendship problem.

“Wonderful. Let me just…” Valerie waded through the water towards Flurry, gliding right between Flurry’s hind legs, stopping right before her muzzle met her crotch.

The sudden closeness caught Flurry off guard, but if Spike wasn’t going to show her what to do, and Valerie was doing what she thought she was doing… She let her legs spread, giving Valerie a subtle look at her gently winking clit. “Are you, you wanna?”

“I need you to wash my back. I can’t reach there.”

“Oh,” Flurry leaned forward, hiding her sex from her friend, once again being denied her pleasure. “Sure. I thought you wanted something else. Nevermind, I can totally wash your back.”

Despite Flurry’s disappointment, she had a very pleasant time with her new friend. Valerie had grown quiet as they cleaned each other and relaxed. She hadn’t had anyone help her in the bath for years, as her dad insisted she was old enough to care for herself, and despite her many requests to visit the bathhouses in the empire they had all been denied as a security risk. To finally do this, to meet a new mare, or yak in this case, and to bond so quickly and so closely, it was amazing.

“Flurried Heart-”

“Flurry.”

“Ah yes, Flurry.” Valerie piped up as flurry finished brushing the yak’s heavy fur, getting everywhere the mare couldn’t reach on her own. “There is another thing I might ask of you. Could you tell me, why are colts so strange?”

Flurry paused for a few moments as she considered what exactly she could mean. “Like, are they teasing you?”

“Not at all. In fact, they don’t talk to me at all. As the chieftain's daughter, I feel I must attend the strange parties the pony chieftain hold. She always claims it’s in honor of the union of our groups, but they are terrible. I am one of only yaks who attend them anymore…” She paused as she readjusted, pulling herself out of the bath and laying on the edge face to face with the pink filly. “Each time though, I see these colts. They watch me from a distance, more intense than a hunter stalking prey.”

Flurry tilted her head as she innately understood what was happening. Without missing a beat, she bluntly stated. “They like you.”

“Like me?”

“Yeah, they like you. Or at least one of them likes you. They probably just don’t know how to say it.”

“So they like me. They… want to join me in bed?”

“What? No. Well, maybe. Is that what liking someone means for yaks?”

“When a stallion likes a mare yes, but when a mare likes a mare they want to spend time when men are on hunt, and a stallion and stallion means they must be hunting or drinking partners.”

“Strange… I mean, hot. But I guess it may be somewhere in between all of them.” Flurry shifted away from Valerie, laying on her back and pushing away from the wall.

“You too are quite strange, Flurried Heart.”

“Flurry.”

“Flurry. I believe that is helpful. We will see. I hope to see you again soon. I like you.”

“I think I like you too, Val. Maybe we can do something else while I’m in town. Your bed doesn’t sound too bad.”

“Okay, you shall come to my home next time we meet. Bye bye.”

Spike spent some time first calming down, before moving to write Twilight and Flurry’s parents about their current situation. He spiced it up a little, adding in little details that Twilight would probably see through, but would at least put a smile on Cadence and Shining’s faces. Twilight had long since figured out Spike’s narrative ticks and at this point, he didn’t even try to hide his embellishments.

It took him so long that after a full hour, he finally realized that Flurry didn’t have anything she would need with her when she left for the wash. Maybe she didn’t even bring any with her. Spike’s scale polish wouldn’t help either, so he had to run out to the closing pony markets wrapped in his cloak just to pick her up some shampoo.

As quick as he left, he rushed back to the shack behind the inn. He made sure to knock before barging into the bath house, but when he did, the door swiftly opened for him and a small yak girl waltzed out. She didn’t speak to him, just a nod before scampering away.

Spike let her pass before poking his head into the surprisingly warm bathouse, towel and toiletries in his claws. However once he saw the nude alicorn relaxing in the water he was sure to close his eyes and maintain whatever level of civility he could with his lewd cousin. “Flurry. I’m sorry I didn’t realize you didn’t have anything with you. I ran and got you all you would need.”

“Jeez Spike. You could've told me this before I left the room.” Flurry kicked the water she sat on the edge of, not looking at her companion as she was still waiting to dry in the humid room. “Valerie leant me hers, but I’ll take a towel if you brought one.”

“Do you think you could come and get it? I don’t want to be too much of a bother.” Spike sheepishly said holding out everything for her but still not looking.

This did cause Flurry to finally look at Spike, only to see him looking like a dope as he tried to respect her. Deep down she thought it was sweet, but she couldn’t let him know that. With a groan, she magically lifted up Spike and dragged him into the room with her. “Ugh, what’s your problem? And open your eyes, dummy, you’re gonna see a lot more than just this tonight.”

He sighed as he knew it was true. He reluctantly met her gaze and offered her the towel. She separated the two and draped the towel over her back, purposefully leaving her small chest uncovered as the fabric slowly absorbed the moisture.

Though as soon as she had the towel, Spike was quick to shut his eyes and turn his cheek, earning another groan out of Flurry. “You know, letting you out of teaching me tonight.”

“I didn’t plan on it.”

“Then why did you send me away?”

Spike slowly shifted in her magical grip, trying to turn away from the still nearly naked filly. “Flurry, not this time, but next lesson will be about the laws about sex in equestria. I’ve hinted to this before, but this isn’t exactly the most legal. Actually it’s probably only legal in the Crystal empire.”

“Why would there be laws about sex? It’s just fun with someone you love.”

“Wow you’re naive. We can chat about that later. I promised you a more physical lesson tonight didn’t I?”

“Yay. More sex with Spike.” Flurry cheered before Spike loudly interjected.

“Not so loud. What did I just say. We can do it back in the room. Now uh, could you please let me down?”

Flurry smiled as she tired to subdue her one excitement at what would happen tonight. However just as his claws could barely touch the ground, she had a new idea, and a devilish smile crept across her lips.

She lifted him back up into the air, and lazily began to float him over the bathing pool. “Hmmmm, no. I can’t make it back to the room. I need it now, and I need it bad. So take off that cape, unless you want it soaked too.”

“It’s a cloak, and put me down.” Spike demanded as he flailed in the air. Though he was hopeful she was bluffing, he scrambled to undo the clasp around his neck in case she was serious.

“Too late.” Not bluffing at all, Flurry dropped spike into the water and instantly soaked him and his new clothes. She tossed aside the towel and now, freshly dried, hopped back into the water to make her way over to the dragon.

“Come on Flurry. What the fuck.”

“I told you to take that dumb cape off if you didn’t want to get wet. Now they’re as wet as I am, master. So what’s today’s lesson gonna be.”

‘This girl,’ Spike thought, ‘She’s been so needy since this morning, trying to suck my dick while I was asleep, acting reckless so I need to clean things up, making me do all the hard work. I know the perfect lesson tonight.’

Spike rose out of the water, standing much taller than the teenage filly, and stared at her. As she approached him, he began closing the distance until they stood claw to hoof. “All right then. Today, I’m gonna show you some punishments. You deserve some after all you’ve done today. Now I could stand here and tell you, or you could go and bend over and I could show you.”

“To think dropping you in some water was all it took to get you to actually teach me something.” She bit her lip as she pressed her face against Spike’s chest. “Now why don’t you make me bend over, teacher.”

Spike sharply inhaled as he could feel the last of his restraint being tested. “You’re making this way harder than it should be Flurry.”

“I’m making something hard.” She said as she enveloped Spike’s shaft in a shell of magic, using the water to stroke him off. “So what, you’re gonna spank me more? Bend me over and smack me with those claws like you did earlier. Sounds fun, but is that all? A sex teacher who won’t even have sex with me, maybe I should have asked that yak to fuck me instead.”

“No you won’t. That’s an order.” Spike reached for the Princesses neck gently tilting her head up to look at him. “Now get on the wall, or you’re gonna learn how bad I can be.”

Flurry didn’t budge, only looking up at Spike and sticking out her tongue.

Spike couldn’t take it. Maybe one day he’d get to do things the way he wanted, taking it slow and really building up to something fun for the both of them, getting the chance to treat her right like he had treated others from princesses to farm ponies. Today wasn’t that day. It was what Flurry wanted, at least. Like he had done before, he let his bestial nature take over and let his inner dragon out to play.

In an instant, he felt his emotions dull as a dragon’s lust overwhelmed him. Not for gems and wealth, but for pleasure. A small gout of smoke leaked out of the corner of his lips as his muzzle twisted into a cruel smile. His soft and controlled grip on Flurry’s neck changed into a tight stranglehold, cutting off the princess’s airways.

“If you want to be a brat, you’re gonna learn how brats get treated.” Spike began lifting her up, pulling her small body out of the water before throwing her back to the water, slamming her against the walls of the communal bath. “Get your filly ass up on the wall, or I’ll show you what happens to naughty fillies who defy me.”

Finally, what flurry wanted. She loved being in control, but this was what she really needed. Spike’s bestial side was unleashed, and she wasn’t even gonna try to tame it. Though now that this side of him had made itself known, Flurry thought it best to be a bit more obedient. She scurried up and positioned herself against the wall, her lower legs still under the water as she lay out of the bath.

Spike was quick to take his position. With just a few steps he loomed over the young princess. He wrapped his arm around his cousin’s neck, pulling the two of them closer as his draconic cock pressed against her ass cheeks. “Now are you gonna be a good girl, or a bratty little bitch?”

“I think we both know the answer to that one, Spike.” She replied with a grin as she began grinding her ass against her mentor.

Spike growled, and leaned in close, the heat of his fiery breath licking the filly princess’s ear. “Disappointing. You need a good punishment.”

Spike began to hump her little rear end, sliding his cock between her legs as the two waded in the water. The loud motion of the water indicated how hard Spike was thrusting, even if it was hindered by the fluid they stood in. They couldn’t even hear the sounds of Spike’s hips slamming into Flurry’s. Spike slid his cock against her more, rubbing his cock against her royal clit, driving home the pleasure the princess felt.

After a few more thrusts, Spike lined the pointed head of his cock up with her pussy lips. Flurry Heart cooed and giggled, expecting what would come next but that faded as spike changed course. Just as she opened her mouth to say something, she felt Spike’s arm tighten around her neck while his other claw came to cover her mouth. With a grunt, he lifted his hips until his cock head was pressed up against the filly’s tight little ponut, a hole even she hadn’t touched. “You want to learn so bad. This is what slutty little princesses like you get.”

Without waiting, he slammed his shaft as far up her ass as he could. Flurry’s tight little unused ponut was forced to give way to Spike’s massive shaft. But just as she thought he’d hit his limit, she felt him continue, pressing deeper and deeper in to her ass.

‘Holy shit, is his dick bigger?’ Flurry thought to herself between lust-hazed desires. This had to be some Dragon bullshit or something, no way he was that big. Or maybe it was just her other hole rejecting the size of the monster inside of her. The pain made her want to scream, but anything she would try would just be muffled into nothing by the strong claw covering her mouth.

Spike pushed harder and deeper until She felt his knot finally press against her asshole. For a moment she worried that he’d force that big bulb at the base of his shaft inside of her in one movement, but that would almost certainly break her.

In all his lust and rage, Spike was at least graceful enough to give Flurry some time to adjust. He knew so many mares loved it up the ass but also knew first hand how painful a first time could be. That grace wouldn’t last though, as Spike started moving again. He’d given her all the time she would get, now it was his turn.

He leaned down to the filly, pressing her body down to the wooden floor while lifting her head up to meet his. He growled in her ear, letting the fiery heat of his breath singe the filly beneath him. “Bad little filly. Be a good little brat and take it.”

For just a second he released her mouth as he was pulling out of her just to hear what might come out, and when the expected scream did erupt he was quick to cover it back up and tighten his grip. He forced his cock back in as deep as he could for now, stretching her unused little muscle to it’s limit.

Flurry grit her teeth as a fire erupted inside of her. However, that fire subsided rather quickly to her surprise. Over time the pain dulled, the feeling of her asshole stretching was unlike anything she’d experienced up to this point, with a similar satisfaction as Spike filled her up. It was strange, incredibly unpleasant to start, but as time passed and Spike rocked her harder, things were changing.

He thrusted in and out of the pinned, pained filly until that pain finally started to subside. His admittedly still slow pace was starting to feel good for the both of them. When Spike eventually tried the same trick of uncovering her mouth, he was met by a moan and not a scream.

In this feral, primal draconian state, Spike could barely think about anything other than sex. And for him, the sex was amazing. Spike would never deny how amazing this Princess’s asshole felt. Every time he’d been with Flurry had been amazing, easily one of the best partners he’d had, but something about this girl’s asshole was on another level. It wasn’t as pronounced as Pinkie’s preposterous ponut, but he knew it was a clear beauty every time he’d been lucky enough to see it so far. It was as tight as when Scootaloo begged him to take her on her 18th birthday, but as soft as Luna’s after a long night in the palace. And it had a control of it’s internal muscles that even challenged Rainbow’s special training. He needed to use her for his own pleasure, use her for all she had before tossing her aside.

His speed ramped up, fucking the filly’s exquisite asshole harder and harder. He grunted and roared in pleasure, slamming in to her precious princess body over and over.

Without warning, Spike yanked Flurry up off the tub wall, letting her fall on to his cock and letting gravity help fuck her harder. The hand covering her mouth shifted down her body, snaking its way around her legs and wings until he felt Flurrys tiny little nipples. The rigid little pleasure nubs were the perfect target to add on to her punishment.

Flurry did everything to keep her voice down as Spike demanded of her, but when he began pinching and tweaking her underdeveloped teats, she couldn’t help but let out a sharp squeak. However those were quickly replaced by strained moans of pleasure as Spike expertly teased and tugged on them, rocketing Flurry to another level of pleasure.

With each time Flurry slammed down, each time Spike let her fall down his dick, her ponut gave way little by little. Each time, her body accepted just a bit more of him inside, getting further and further down his knot. It was impressive to spike, who knew more than a few ponies who had screamed as he knotted them, but Flurry took it incredibly well.

With one final powerful thrust, she fell all the way to the base of his cock, taking the entire length and his knot all the way inside of her. She couldn’t hold back her lustful screams anymore, as her eyes rolled back and tongue hung out. The feeling was too much, too stimulating, too extreme.

With a roar, Spike let out a torrent of cum deep inside the filly’s asshole. He pulled her tight to his body, forcing her wings to painfully stress against Spike’s unmoving arms as Flurry’s own orgasm rattled her body. She twitched and convulsed, her legs unable to stay still as she was held up on Spike’s cock.

With the last of his strength, Spike walked to the edge of the bath where he released his prey. He dumped her back where they started, her legs dangling in the pool while he rested on top of her, slowly starting to dislodge himself from her tailhole. When his cock finally popped itself out, he rolled over to his side and gave Flurry some space.

Moments stretched into minutes as the two lay on the edge of the bath, hot fresh cum leaking from both of Flurry's thoroughly used holes. Spike panted as he regained his energy, and finally let his dragon rage subside.

He let out a deep sigh as his cock softened, retreating away for next time. He felt more exhausted than he ever had after something like this. Even sessions with Trixie and Starlight were less exhausting, and those ponies were into some really weird stuff. He went to reach for the pink princess beside him when he finally heard something he feared.

Flurry quietly sobbed as she recovered from Spike’s ‘lesson’.

He immediately knew he took things too far. She was a tease and a brat, but she was still young. Spike hated to treat her like that, but she deserved it. Maybe he should have done things differently.

He hesitated, unsure of what to do. Slowly, he approached her, reaching for the spot between her wings to try to comfort her. “Hey, uh… Flurry, I’m so sorry. We should.”

“We should do it again right now.” With a flip of her mane, she revealed to spike her wide smile as she sobbed with joy. “Spiiiike, I loved that. You were so rough, and you used my other hole. I never thought about touching that one. It was strange, but it was soooo good.”

She jumped into Spike's arms and began planting kisses on his neck and cheeks. Over and over she pecked at her cousin’s body, overwhelmed with joy and love for her teacher.

Spike once again sighed, but this time deep with relief. This princess was more of a freak than he thought. “I need some rest first, Flurry. But we can go again soon. Just, lets get back to the room, please.”

Author's Note

Next chapter. Yay.

This has been on hold for a while since I accidentally committed to writing a sex scene I wasn't fully aware how to write. I wanted this sort of animalistic side of spike to show, but the problem was that I like writing chatty sex scenes, and this wasn't gonna be that. It needed to happen though, since Flurry's a little brat and deserved a rough fuck.