Katya's Continued Lessons

Story by Joshiah on SoFurry

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#88 of Incest Stories (Others)

Even when she thinks she knows every trick in the book, it turns out that Katya still has a thing or two to learn about pleasing a man...and it just so happens that said man is her brother, and it's her mom helping her figure things out. In this commission for Dargon, you're getting exactly what you expected!

After just barely outlasting Katya in a sexual endurance race, Fenil finds himself having to answer for two women: their mother was watching all along, and after playing the spectator, she's ready to get in on the action...but she's just as concerned with critiquing Katya's technique as she is with enjoying herself!

With two sexually charged offspring coming after her, however, she's going to have to focus on the fun before too long...

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Commissions are open! https://docs.google.com/document/d/1M4k7uyTIRESrkmEhcuQPtznK7qDFrDH358Vk9-bYrGY/edit?usp=sharing There's just a couple days left to snag one for September, so don't delay!

If you enjoyed this story and want to help me keep creating, please support my books on SubscribeStar or my new erotic adventure game on Patreon! https://subscribestar.adult/joshiahswrittenworks https://www.patreon.com/Joshiah There's a ton of exclusive, unique content on either sight, and plenty of benefits for the extra support.

As always, read, comment and enjoy!


It wasn't hard for Fenil to get past the taboo of sleeping with most of his family members, when it meant that he had a pair of women just waiting down the hall from him, ready to get into bed with him at a moment's notice.

The harder part was keeping both of them satisfied, and when Vania was coming in at the end of the first round, he couldn't possibly hope to last long enough to meet her expectations.

"See? You need to give the sack a little more attention," she explained, as she looked her daughter in the eyes. Their tongues were already brushing against each other in a passionate and complicated dance, and Fenil's manhood was the dancefloor of their choice...but even after her previous lessons, Katya hadn't taken the lead from her mother just yet. "He's twitching faster now...keep licking the tip for me, would you?"

As much as she didn't want to cooperate with her mother's request, Katya had worked too hard and too long to make her brother climax to go any further without some kind of physical result.

She preferred the idea of getting to hog his load and drink it all down herself, but as she drew her tongue back and flickered it back and forth over the draconic tip, she noticed her mother placing just a pair of digits around the tip, just under the reach of Katya's tongue.

It took only a few seconds of swirling rotations for Fenil to reach his peak, and without warning, his cock erupted over Katya's face, soaking her scales with even more seed than she'd expected. His orbs were clenched tight by his sack, and immediately, Vania gave them a playful squeeze, wanting to see how much more she could draw out of him; the fact that she was using far less effort than her daughter was another point of pride...one that she could rub in Katya's face as the younger dragoness struggled with her brother's load.

"When all you do is move up and down on something, it's amazing what a change it is to try going from side to side," Vania explained. She was able to speak clearly to her daughter, but Katya couldn't rebuke when her tongue was struggling to contain the last of her brother's mess. His cock throbbed freely enough that keeping the tip surrounded was a herculean task; Katya's face was soaked with the excess.

As Katya finally caught the last of that mess and glared at her mother, Vania offered one final barb to her: "Looks like you haven't quite figured out how to please the man of the house yet, have you?"

Vania was watching the two of them play more often than she let on, and she'd joined them enough times that her playful interludes were less of a random invasion, and more of a checkup on her daughter's progress.

In fairness to Katya, Fenil wasn't quite making the kind of progress she'd hoped, either, but even Katya had noticed just how much more aggressive he could be; anything was more than zero aggression, of course, but even Vania had been caught off guard by his growing desires, since their first, groundbreaking time together.

"I had him right where I wanted him before you came in and messed things up, you know..." Katya groaned, swallowing down as much of her brother's cum as she could before she opened her muzzle again. "Sometimes you need to focus more on the teasing than the pleasing, mom."

Flat against the bed, Fenil's eyes were rolled back, his chest was heaving, and his lungs were burning from the sheer effort of the climax he'd achieved. Katya wore him out more than she intended, but she knew he'd be ready to go again if they demanded his services.

Knowing her mother as well as she did, she hoped that Fenil was in a mood to bounce back quicker than usual.

"Spend as much time as I have with one person, and sometimes, you'll realize that you tease a little too much before getting to the pleasure," Vania advised. "Your heart was in the right place, sweetie...but if you'd just hopped into his lap and given him a ride, he probably would have cum a few minutes ago!"

"...Just how long were you watching?"

"Long enough to soak my fingers a couple times," Vania admitted. "And more importantly, much too long to watch without getting to join in the fun."

Knew it, Katya thought. And now that I'm ready to fuck him, she's gonna take him away from me again!

"So...if you're so confident that you know what you're doing, why don't you show me what you've got?"

Katya blinked. "You're not gonna fuck him first? You always try to..."

In a blatant invasion of her daughter's privacy, Vania made it clear that there was no secrets between them when she fished the strap-on from the top drawer of Katya's nightstand. "Oh, I'm going to fuck him silly," she confirmed. "Can't let him go unpunished for giving that you that kind of effort when he's been snubbing me all week...but I'll let you take him from the front, if you don't mind me claiming the back."

Fenil gulped, and even then, his saliva was laced with the taste of his sister, after her messy climax.

"You gonna make me suck that thing, or should we make him do it?" Katya asked. She was still a little frustrated with her mother for intruding, but when the pair were on the same wavelength, they turned into a sensual duo that neither Fenil, nor his father, Merton, could ever keep up with.

Their work against each other might provide more _visual_entertainment to Fenil, but their cooperative work was guaranteed to provide him with more pleasure...assuming that he was willing to play along.

Of course, they weren't going to give him any choice in the matter.

"How about I go ahead and lube it up myself?" Vania suggested. "Get our boy going again, and make sure his tail stays out of the way...show me that you're finally up to the task of keeping your man satisfied."

She didn't need her mother to give the instruction: Katya was planning on working every drop of cum out of Fenil before the sun set on that day, but with Vania watching so closely, she was going to give it her best effort.

Whether it was arousal at how wrong it was to fuck in front of her mother, or determination to prove that she'd become every bit the lover that Vania was, Katya always gave her best performance when the older dragoness was in the room during the act...or even in the back of her mind.

"Don't take it easy on me," she said, but she looked back to Fenil as she uttered those words. He was finally catching his breath once more, but he knew he wouldn't be allowed to keep it for long. "And don't tell me something just to make me feel better, either...don't tell me I'm better than mom unless you absolutely mean it ; you got that?"

Fenil knew better than to lie to his sister: his tailhole was already going to take a pounding from one dragoness that day, and if Katya suspected he was fluffing his words, she'd have a go at his ass before all was said and done, too.

"You gonna say something or what?"

Katya was used to having to challenge her brother a little bit to bring out the pinnacle of a lover that he was capable of being. She knew she'd already worn him out a bit, and further, she'd nearly sucked his soul right out of his body with the amount of effort she'd worked into his cock.

"Yeah...bend over. Tail up."

What she wasn't used to was Fenil responding with any sort of aggression. She expected his affirmation, and thought he'd whimper his way through being agreeable with her, as he usually did.

When she didn't immediately move, she felt a firm swat against the toned cheeks of her ass; her brother was full of surprises that afternoon, but she refused to let him get the better of her twice in one day.

"You really think I'm gonna do that just because you gave my ass a little spank?" Katya asked, challenging his authority while her womanhood stayed dripping over the end of his muzzle. "To be honest, I'm a little insulted, Fenil. I think you can do better than that."

Physically, Fenil was the smallest of the three, despite his previous efforts to fill out his frame. He wouldn't be able to overpower Katya in a literal sense, but another swat on her backside, right over the first, still-tender spot was a start.

The jab of two digits into the part of her eager folds was what really drove the point home, however.

"S...Still not enough, little bro..." she whispered, trying to stifle a louder moan. Their mother watched with approval as she suited herself up with the strap-on, but she was just as curious as Katya about Fenil's methods. He was learning how to get the advantage without his strength...and he was learning fast.

"To satisfy you? Of course not," he rightly claimed. "But if you want me to keep going, you will bend over."

Katya gave serious consideration to grabbing his wrist and yanking his fingers out of her womanhood, but as he started a rapid, domineering pump, she quivered above him and tried to keep another gasp from escaping her lips.

If she couldn't nail down his muzzle and force a ride onto his face, she wouldn't be able to climax again without greater stimulation; her brother forced her into a stalemate, and he was offering mutual pleasure if she simply cooperated.

She wasn't submissive, but she was heated, desperate and smart enough to know when to take the offer.

"Fine...but if you don't fuck me as hard as you can, I'm not letting you finish inside," she said, making her demands.

She was still in control, as far as she was concerned. She didn't wait for Fenil to push her down to her knees once more, but she gave her brother just enough room to move, needing him more than she was willing to admit.

Her tail, along with her eyes, rolled and lifted before him, and the smaller dragon took his position behind her...but the tip of his cock only just tickled at her petals before Vania grabbed him from behind and wrapped her thick, powerful arms around him.

"Actually, I'm still the matron of this house...and as far as I'm concerned, it's up to me where Fenil spills his seed," she claimed. "He outlasted you, after all...what more does he have to do to earn the right to breed you?"

Pushing herself back onto what she could reach, Katya fucked herself on her brother's cock, refusing to let her greedy mother get in the way of her pleasure. "For starters, he could fuck me to the point of satisfaction even once in his life," she muttered. She knew Fenil wouldn't be able to move until Vania started pushing into him, but their mother was having a simply wonderful time keeping both of them at bay, knowing how eager they were to start another round.

As much progress as Fenil had made since their last threesome, he still wasn't quite up to the 'man of the house' status the girls hoped he would someday attain. Feeling Vania's grasp around him was just enough to leave him trembling again, and with impressive precision, she eased the tip of her strap-on right against his warm, soft pucker.

"I've seen the two of you at play enough to know that you're lying, my dear. I've heard you begging for him to fill you up more than a few times...you really expect me to believe that he's never left you satisfied?"

As she spoke, Vania rolled her hips into Fenil, and like a good, faithful son, he held still until the shaft was buried deep in his ass. Wincing at the pressure, he felt a renewed sense of purpose with his mother's encouragement and imitated her approach, leaning fully over Katya's backside.

Just feeling his arms clench around her tummy and pull her body closer was a thrill unto itself, but the deep, driving jab of his cock into her welcoming passage left her biting the pillow as she fought back against her own vocal chords.

My own brother is fucking me... hard...while our mother fucks him from behind and encourages us...so many people would judge me for cumming again, but...they don't know what they're missing.

Making Fenil work for her release was one of Katya's favorite bedroom activities, but the weight of taboo was too much for her to push back against without reaching that peak. A smaller, quicker orgasm built and released in her womanhood as she allowed herself to sink into further depravity, but she still gave everything she had to stifling those groans into the pillow.

"You know I...f-feel that, right?" Fenil mocked her silence, seeing her drool spill over the soft, fluffy pillow between her fangs. "You might as well admit you love fucking your brother...not that I didn't already know."

Confidence quickly drifted toward arrogance in Fenil, but this time, Katya didn't slap him back over that line.

She couldn't. Her walls clenched hard of their own accord and milked him, as if they knew better than she did that his seed would be the only thing to bring her any relief.

"I'd ask what's gotten into you, boy, but I don't think me getting into you is what caused all this," Vania murmured. She felt the constant trickle of liquid desire from her mound as she continued rolling against the strap-on, knowing it would never bring her to a release...but the firm, full knob for her to clench around gave her a low, relaxing pleasure as she worked her hips into her son. "That's the first time I've heard you stand up to her in the bedroom, you know!"

As the woman of the house, Vania took her controlling role very seriously, so much that she wanted to give herself credit for Fenil taking a shot at Katya's usual resilience.

Her kids were adults, however, each with their own personality; she was just lucky enough to watch them come into their own, usually when they were cumming into each other.

"Sounds like it's...t-two against one," Katya groaned, looking back from the pillow and shooting her brother a glare that struck like a dagger. The longer she looked, however, the more her expression softened, until she couldn't hide her need any longer. "Even I've got my limits, little bro...if mom's on your side, I can't even h-hope to win..."

Those kinds of compliments were rare in the household, regardless of who was giving and who was receiving.

Fenil actually halted his thrusts and blinked, caught off guard by the sudden change of Katya's tactics.

"You wanna be the big brother tonight? You'd better fuck me like one."

Her hips crashed back into him with such sudden force that Fenil slumped back against his mother's breasts, but even before she could encourage him to meet her challenge, he raked his claws over the front of her thighs and dug in, practically ignoring the girth of the strap-on in his tailhole.

Vania did her best to keep up with the new pace that her children discovered, but as she watched, she couldn't help but be impressed with their efforts. Katya recaptured her usual, dominant flair and looked back at Fenil with a demanding glare, but this time, when Fenil rose to meet the occasion, he wasn't just trying to keep up.

He was finally trying to prove that he could match her, and after so much time spent being controlled by her every sexual desire, Fenil was on the verge of putting himself on equal footing.

"If you stop...if you even s-slow down a fucking bit, I'll never let you ride me like this again," Katya warned him, but she was only met with greater force by Fenil, who drove his hips right into the plump curve of her ass. The bed shook under their mingled weight, and from behind, Vania made things harder for the smallest dragon, as the tip of her toy brushed against his prostate.

He gritted his fangs, he gripped at her with all his might, and he pounded his length into her sopping wet passage until he was struggling to breathe...but right as he neared the apex of winning the incestuous battle, something happened, completely out of his view.

Vania winked at her daughter before plunging her hips forth and burying the toy against Fenil's innermost pleasure center. He was already leaking precum inside of his sister, but the gush of seed that followed nearly flooded her womb, and excess was already trickling down her thighs on the way back to the bed.

His own mother had slashed his tires right at the finish line, leaving him a quivering, trembling mess behind his sister.

"Don't let that hubris get the best of you, baby," Vania whispered into his ear, as his body shuddered in her grasp. His jaw was nearly slack with earthly delights, and that was the only thing keeping him from crying to the high heavens about the bliss that surged through his body. "You were so close to getting the better of her!"

The flood of cum that spread across her insides left Katya to quiver with delight, but nowhere near the level of mind-numbing pleasure that Fenil was treated to. Her third climax of the hour was so great that she couldn't keep a streak of feminine ejaculate from squirting back over his sack...but she loved the thought of marking him that way, even as he claimed her from the inside.

His forbidden yield poured inside of her as Katya bucked herself on his stilled member, winking back at her mother and taking the unfair advantage. "Guess you p-pushed a little too hard, Fenil...gotta be careful n-not to burn out like that!" she advised, knowing that she could get away with it for another minute or two. "Still got some...f-fucking learning to do after all, don't you...little bro?"

Her voice was sing-songish, mocking Fenil back an entire month's worth of sexual education, but her satisfaction was so great that it awakened something softer in her; a genuine affection spread through her like ethereal warmth, as she looked right back at his slumping form.

"I...t-tried," he groaned, panting through the intense sensations. "_Nnnf...mn..._you're just t-too much for me, sis..."

She shook her head, and in a truly rare move, she leaned in just close enough to kiss his cheek. "No, Fenil; I'm just right for you."

He blinked, feeling such a shock that he couldn't reply.

"Rest up, Fenil. You'll get another shot at being the big brother soon."

With no clue that he'd been cheated out of getting the better of his sister, Fenil couldn't help being grateful for another chance.