New Dog, Old Tricks

Notes: Once again, this was written by my tomodachi, cakie_nsfw! If you're interested in more of her work, hit up her AO3. You can find her commission info here.

"Hey Athena," Rin muttered casually, pulling the end of her pen away from her lips. "You remember our discussion about exploring stuff in the bedroom, right? I have an idea of what I want to do," the girl smirked, her eyes trailed over to her girlfriend who nervously pulled her pen away from the page of her notebook. How she adored how easily it was to fluster the girl when it came to discussing sex. "I think I have something that you'd enjoy. Why not give it a go tonight when Sojiro's gone for the night? Maybe we can book a room in a Love Hotel too if that's what you want instead,"

Athena found herself blessed that the older man couldn't hear them from the attic. Returning the cap to her fountain pen she settled it down against the desk she turned to her grinning beloved. "Yes, I remember it, Rin," Athena smiled, always eager to follow whatever she wanted to do with curiosity and enthusiasm. "What do you have in mind this time?"

"Ooooh eager, are we? And I thought the Princess of Altea's supposed to be an innocent beauty," Rin teased, which only made Athena roll her eyes at the comment, yet Ren could spot the tell-tale shade of red that coloured her cheeks. "I think you're going to really like this one," Rin claimed. "I got everything ready in my schoolbag, so we can go whenever you'd like,"

"By Naga! In your school bag of all places?" Athena gasped at the bold, scandalous action. "Are you sure you want to carry something like that in there? Don't you have any other bags to use? I can lend you one of my purses if you'd like,"

"Nah, sweetie," Rin shook her head. "They're probably super expensive anyway. Don't want to get anything on them, you know," she said, winking towards the direction of the princess. Pride welled inside her when she saw Athena bite her lower lip and crossed her legs. "Besides, it's not like I'd have them laid out without proper protection. All the toys for our new little game safely tucked inside a plastic bag, ready and waiting for us to play with them," The more Rin insisted on teasing Athena with her little promise, the wider her blue eyes grew with anticipation. Rin could spot Athena curling her fingers against the skirt of her summer dress, the blush on her cheeks deepening further into a deep red, and the deep, ragged breaths which shuddered through her petite frame. "But I understand if you want to finish this exam paper first-"

"No, no it's okay," Athena insisted a little too forcefully, Rin's delight growing alongside the grin on her lips. "I'm fine with stopping today. It's getting rather hot up here, shall we go somewhere with some aircon?"

Excitement turned to confusion when Athena opened the plastic bag. There she found a rather perplexingly shaped dildo, a collar with a tag, and most bizarre of all a headband with dog ears attached to it. "I don't understand?" Athena said. "Are these... for me to wear? What exactly are we trying out tonight, Rin?"

"It's called, 'pet play' 'thena," Rin explained, snaking her arm around Athena's waist she pulled the girl closer towards her. "You know. One of us is the pet, and the other is their owner. You understand where I'm going with this, right?"

"I... understand," Athena said, her mind wrapping around the explanation Rin was so eager to provide, she could already feel the excitement and anticipation overwhelm her. "I'm assuming I'm the pet, right?" she asked, "though being a dog feels... a little..."

"I'd think it fits you perfectly," Rin said, kissing Athena's cheek which made the girl's fluster even more prominent. "We don't have to do it if you want to-"

"No. I want to," Athena insisted. "Though I don't understand what the dildo has to do with my costume..."

"No, no, that's for me," Rin insisted, snatching up the dildo and strap before Athena could comprehend her words. "You don't have to worry about it now, okay? Why don't you change into your costume for me? The clock's ticking for our room you know," Rin reminded the sheepish royal, "We don't want to get kicked out before we get to the really good part."

Athena was sure the hotel wouldn't dare to, but she understood clearly what Rin was trying to imply, and obediently she picked up her 'costume' before she walked towards the bathroom. Hastily Rin stripped herself off her clothes, the heat of the summer air and her excitement made them even more overwhelming, each time she could hear the rattle of metal echo against the bathroom doors only made her more excited. A few minutes had passed before Athena emerged from the bathroom. She was totally naked, save for the collar around her neck, its leather red and bright as it contrasted against her perfect skin. The tag that rested in the centre of her chest has Athena's name lovingly engraved in it, and the dog ears that matched her blue, distinct hair tied the whole look together. "Does this look alright, Rin?" Athena asked nervously, "I admit the ensemble looks quite cute, but I'm not sure if it fits 'me',"

"No. No, you look perfect," Rin insisted, "Better than perfect. You look so wonderful in that, I couldn't ask for anymore," Rin ushered her girlfriend over, a command Athena followed obediently before settling down on the bed. "There's just one more thing we need to talk about, okay?"

"The safe word?" Athena asked. "I remember it. 'Morgana', the name of your cat, right?" how Rin wished she could fuck her girlfriend stupid already.

"There's that, but something equally important," Rin said. "You know how pets normally don't speak right?"

"...yes?" Athena answered, an eyebrow raised from what Rin was trying to imply.

"Well, with pet play the whole point is for you to be a dog. So, what I'm asking is for you to try and not speak unless it's the safe word or something equally important. Just 'bark' and 'woof’s, okay?" Rin pleaded with her. Athena pursed her lips in thought.

"Okay," she said after a pause, "I think I can do that,"

Giddy with excitement Rin kissed Athena on the lips. "Oh, thank you, 'thena!" she exclaimed, "Thank you! Now. Does my little puppy want some lovin'? Does my puppy want some foreplay before taking in some silicon cock?"

A whine escaped from Athena's throat as she nodded happily at Rin's suggestion, surrendering herself to the role Rin expected her to play; she gleefully eased herself onto the waiting bed. "That's it, that's a good girl!" Rin excitedly praised her, her kind words kindling Athena's excitement deep within her loins. "Spread your legs, my cute puppy. Please show me that cute little pucker of yours, I was nothing more than to kiss against its rim and give it all the attention it deserves!"

Obediently Athena did as she commanded, her legs spread wide she eagerly parted her cheeks with her hands, eager showing off the winking hole with little shame and great anticipation sparkling in her eyes. Gleefully Rin covered her fingers with a generous helping of lube, making sure to put on a huge spectacle of it before her ghosted her touch against the rim. "Aww. 'thena's so cute when she her owner to play with her special place. You want me to play with it, puppy? You want me to play with your insides? To spread you wide?"

"Yes. I mean, bark," Athena moaned. The princess bobbed her head, her breaths already ragged due to the stimulation of Rin's touch, she yearned for more. "Bark, bark?" Athena whined, "Bark, bark bark! Bark bark!" she chanted, rocking her hips against Rin's teasing digit.

"Aww, you're so cute! Already knowing how to beg like a good girl," Rin laughed, obeying Athena's desperate pleas she eased her digit a little further into her hole. She adored how Athena instantly gripped against it, how her hole sucked and pulled her, as if it acted on behalf of Athena's sultry will. "You're sucking me in so much!" Rin whined. "So cute and desperate. You want more girl? Does puppy want to feel herself stretch more? Because I'm always happy to give whatever my cute pet wants!" Without a reply, Rin gleefully slipped in another finger of hers, Athena hissing and groaning against the weight of stimulation Rin found herself eager to overwhelm her with, yet Rin knew this was what Athena eagerly yearned for. Tenderly massaging her hot, quivering walls Rin found herself bold enough to slip inside a third finger into Athena's asshole, the girl yelped in surprise at this sudden, yet welcomed intrusion. "Damn baby. Just my fingers are enough to get you wet!" Rin laughed joyfully, "You really are like a bitch in heat!"

"I can't help it-"

"Ah, doggies don't speak, babe," Rin reminded her, withdrawing her fingers as punishment for her disobedient pet. Athena could only whine in her need for more. "Ah ah ah! You did a bad, and you need to be punished for being naughty. Roll onto your stomach and show me that cute ass of yours," Rin demanded, "Or else master won't allow you to have any cummies tonight,"

Trembling from her aching need Athena hastily obeyed, flipping onto her stomach she eagerly raised her hips off the bed. Ass in the air she showed her girlfriend the full sight of her winking hole, the outer rim blushed with a deep red at the recent stimulation Rin provided her with. "Good girl," Rin cooed, her lips smacked with delight.

Before Athena could prepare herself, to comprehend the madness Rin was eager to push her into, Rin's tongue found itself lapping away at her twitching walls. The princess howled in surprise and her need for more, hands tightly clutched against the sheets of the bed, she scarcely anchored herself against the overwhelming pressure Rin was so delighted in pushing her under. "Woof!" Athena cried, rolling her head against the bedsheets she bucked her hips, ready to take whatever her girlfriend found herself charitable to give. But Rin was taking what she rightfully deserved, too occupied with the taste of her girlfriend’s ass she pushed herself harder into Athena, heat and need found itself occupying where her sanity should be as she prodded and poked against Athena's walls with her slimy tongue.

"Woof! bark, bark! Moreeeeoof!" Athena shrieked in her confusion, the heat and weight of Rin's chaotic treatment only made her yearn for more, unable to fully choose and rationalise the words spilling from her lips without trouble. "Bark bark bark!" Athena pleaded with her girlfriend, her head full of heat, she rocked her hips in her clumsy attempt to match Rin's equally clumsy rhythm. Rin kept going, kept pushing deeper, a wicked, primal need to taste every inch of her shaking girlfriend consumed her in a chaotic haze as she continued barrelling forward. "Woof! Bark! Riiiinark!" Athena squealed. "Bark! Gonna cum! I think I'm going to-"

Quickly Rin pulled away, leaving Athena utterly hopeless and on the edge of climax. "'thena," Rin whined, her voice full of fake disappointment. "Babe, remember what we discussed. If this keeps happening, I'll have to punish you. I don't want to do that to my perfect puppy princess. Please keep the human words to a minimum, okay?"

"Woof," Athena whined, flustered and desperate to release the pressure inside her she could only obey, her hot, angry cheeks matching the colour of her collar. Needily she shook her hips, yearning for Rin's attention. "Woof? Bark bark woof?" she pleaded in dog.

But Rin found herself occupied to acknowledge the soft whines of her pet, locking the peculiar dildo onto the strap-on her fastened it against her hips. Taking the bottle of lube once more into her hands she eagerly slicked on a generous helping onto the toy. It was long and thick, the sloping tip hungered for whatever hole Rin wanted to fuck with it, yet its most distinct feature was the veiny knot placed near its base. Athena could hear her preparation too, her hips eagerly jutting in anticipation of her girlfriend fucking her right there and then, not to mention the gleaming, visible patches of slick between her legs. "Woof?" Athena cried. "Woof? Bark, woof?" she keened, ready for whatever Rin had planned for her, needing whatever her girlfriend wanted to overwhelm her with. "Bark! Woof! Bark! Bark, bark, bark,"

"So impatient little puppy. Didn't I train you enough?" Rin huffed in playful annoyance, aligning the tip of the dildo against Athena's gripping hole. Hungrily it gnawed on the big, bulbous tip. Athena whined desperately, pushing herself against the cock she yearned for Rin to finally give what she wanted, what she craved, keenly aware that Rin too wanted to give everything she was yearning for.

But what Athena was prepared for, was the intensity of Rin's love until it was too late. Suddenly the girl grabbed onto her dainty hips, and with one thrust she clumsily slammed into her unsuspecting partner, almost every inch of her insides wedged opened with silicone cock. The feeling was too overwhelming and hot for Athena to properly deal with the sudden pressure inside her, so she did what she could only do at that moment. "'thena, you're making a big mess!" Rin whined, almost gleeful at the sight. There Athena was, her legs shaking uncontrollably as a bright stream of golden piss spewed between them, a powerful squirt of her pussy cum adding to the messy concoction. "I think little 'thena needs some more training with handling cock. Isn't that right, Ay-ay? Isn't that right!?"

"Rin-Rin," Athena choked, too caught up in the high of her climax to properly remember their agreement, yet this time Rin had the charity to forgive her mistake. "So big. I feel like I'm suffocating," she keened, "It's feeling my insides Rin, it's so overwhelming, I don't think-"

"But you're doing so well, baby," Rin whined alongside her desperate girlfriend. "You've taken bigger before, remember? You can do it. There's no one who I believe that can take me better than you," Everything about Rin's honeyed words served only to make Athena fall further into this lapse of insanity, to push her further into a madness that would surely cost the pious girl het innocence; yet Athena found herself willing to throw herself into the fire without hesitation. There was something about Rin that made her go crazy, made her willing to push the boundaries of what she was comfortable with, all sense of shame thrown out with only a single command from the girl dominating her. "Come on, now, Ay-ay," Rin once more prodded, licking her lips at the sight of Athena's entrance massaging the toy that was splitting her wide.

"I'm gonna move now, 'thena," Rin warned her, "I'm going to fuck you slowly to start with okay, baby? I'm going to drive you absolutely crazy, all you need to do for me is take everything I give you, okay?" A nod and a bark from the helpless girl below her, Rin's smile grew wider as she slowly eased the wide shaft from Athena's hole, only to sink it all once more in delight and hunger. Rin wanted to make sure Athena enjoyed this too; yet the hunger swelling deep inside her screamed with the need to claim her girlfriend, the lust she felt towards Athena filled every nerve of hers with fire. But Rin knew she had to calm herself, had to ease them both into the chaos waiting for them, and so she continued her descent into lustful madness.

But it seemed Rin understood the impatience welling inside Athena, the girl hungrily bucking against Rin's purposeful thrusts with growing desperation, she needed nothing more than to find herself completely made undone by her beloved. "Woof!" Athena whined, "Bark, bark," she keened, easing herself once more into the role Rin was so generous to give her, throwing her humanity away if it meant bringing herself greater pleasure. "Bark, bark, woof!" she moaned in her delirium, begging, demanding Rin to give her more. "Bar, bar, bark!" Athena pleaded, clumsily fucking herself against the foreignly-shaped phallus with her shame melting away into nothing, her strong legs struggling to carry the suffocating pressure she forced herself into so readily.

Rin loved it, loved watching Athena needily fucking herself against the shaft of the toy in primal hunger and greed. Loved the hot, desperate whines rising from her throat. "I can't hear you moan if your face is down against the pillows, Ay-Ay," Rin whined yearningly. "Please stop hiding your cute widdle voice like that, baby. I love it when you whine like that for me, I want to hear it so badly, don't you know how much I looked forward to this?" Athena replied to her pleas with another struggled gasp echoing from the pillows, the girl convulsing under her with such wanton noises that made Rin's heart soar, if only she could get rid of the fluffy obstructions once for all.

What Rin did next was completely irrational on her part, there was barely any thought put into her action, only greed and desire ensnared her as she reached for the back of Athena's collar, her fingers clutching against the red material she eagerly tugged against it with all her strength. Athena could only gasp as the last slivers of her breath as her neck found itself caught against the material. "Woof!" Athena choked, fear and panic overwhelmed her as she choked against the collar, forced upon the toy that threatened to ruin her. But Rin kept going, kept feeing her inch after inch of silicone with increasingly wild abandon, the new angle she forced Athena in allowed her to fuck her deeper than before.

As quickly as it started, Rin released her grip against Athena's collar, allowing the girl to fall back into the safety of the pillows below. "Ay-ay, you did so good!" Rin giggled lovingly, and Athena shivered at the praise despite the rough handling Rin forced her to endure just moments before. Both girls found themselves so close to their climax. "Turn around for me, Ay-Ay, I want to see my babygirl's face, I want to see you and kiss you on your precious cheeks!"

Athena struggled against the dildo, but even with her quivering limp she managed to turn herself around the cock to face Rin's sparkling expression, her girlfriend watching her with wide eyes full of adoration and hunger. True to her word Rin leaned in to give her a kiss on a cheek; eagerly the shorter girl folded the princess in two in her display of affection, Athena's hips dragged along by the girth of the dildo that filled her, she had no choice but to wrap her legs around Rin's dainty waist for any kind of support. "You're so cute, Athena!" Rin giggled between her wet kisses, savouring every keen and whine coming from her flailing girlfriend, how needily Athena clung against her with love and passion. "You know what good girls like you deserve?" Rin asked the princess. "I think you deserve a reward for your good behaviour for taking me so well, for pushing yourself like this, and I'm going to make sure for you, it's all worth it,"

Athena stared at Rin, her blue eyes wide with anticipation and wonder, and Rin found herself smiling at how utterly hopeless her girlfriend looked under her. Winding her hips once more Rin rocked the toy deep within Athena's ass, this time using the weight of her body to dig and grind against the spots that drove Athena the craziest. "You love that, don't you sweetie?" Rin asked Athena, the satisfied moans and silent pleas for more coming from Athena her answer. But while Athena found herself content with the insanity Rin was willing to push her into, Rin instead found herself craving for more. It wasn't long before her greed overtook the smaller, lustful girl.

Faster Rin fucked Athena, harder she slammed all her silicone cock into the whining princess below, blurting the line of take and give between the two of them Rin barrelled forward with wild abandon. "Woof! More baby, more!" Athena cried, her frantic expression coupled perfectly with deathly focus Rin was sure to employ, "Your doggy wants kisses. Ay-ay want a kiss!" the princess whined desperately, the eloquence she normally held dissipating into pure hunger. Obediently Rin crashed her hot lips against Athena's in wanton delight, their kisses echoed noisily with passionate slurps and smacks alongside the obscene noises coming from Rin's hips. Only their love for one another drove them into such obscene, dizzying lovemaking. "I think I'm going to cum, Rin!" Athena screamed. "Puppy's gonna cum! Woof woof! Ay wants to cum!"

A wet, obscene pop echoed throughout the room. Rin's eyes widened at the sound, Athena's eyes rolled back alongside her head, neither girl unable to comprehend the wave of pleasure that crashed against them both. Athena couldn't help but let another stream of golden piss amongst the blinding pleasure, not that Rin fared any better with her own eruption of bliss and madness coursing through her veins, she too unable to hold back the contents of her bladder for long. Both girls convulsed and spluttered, joined and locked by the knot that found itself nestled within Athena's hole, there was nothing they could do but ride their shared orgasm into completion.

It was Athena who recovered first this time, sharp breaths escaped from her lips as she adjusted to the pressure built from the toy deep inside her, it was her turn to steady her girlfriend from her orgasmic high. With a sharp pull Athena dislodged herself from the toy. Her rim was sore, and no doubt she would be incapable of walking normally for the next few days, relieved that there was still a week of summer break left to enjoy. "Ay-ay," Rin mumbled wearily. "The bed smells like piss," she whined, wiping away the sweat with the back of her hand. "Fuck. That was amazing. You're so amazing, Ay-ay. I love you so much!"

"I love you too," Athena nuzzled lovingly against her girlfriend, settling tenderly by her side, her slender hands trailed down her slick, slightly chubby body to where the strap-on and dildo were located. A pause from the royal while Rin struggled to catch her breath. "Did I... I did I take that- all of that- inside my asshole!?" she asked, now fully comprehending the size, the girth, the shape of-

"You like?" Rin laughed at Athena's stunned face, wiggling the toy between her legs in pride, watching Athena's face flush into an impossibly deep red. "I wanted to do puppy play but I bought this on a whim. Does the Princess of Altea like it?"

"Rin I-" she stammered, yet Rin knew Athena too well with the way she bit her bottom lip, the way she stared at the toy before her.

"We still have time," Rin winked at her princess, "and enough lube too. What says you, my cute little puppy? Ready for me to bury this bone into your hole once more?"

Athena had never felt so ashamed, yet so aroused in her life.