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"I still can't believe you slept with mom...you're such a freak."

There were almost no secrets in the draconic family unit anymore, but that didn't stop Katya from teasing her younger brother about the things that he'd done, or the rather shameless manner that he'd gone about them.

For her to do that when she was sitting on his muzzle and rubbing her womanhood back and forth over his lips might have been just a _little_bit hypocritical, but with his mouth so completely occupied, there wasn't an opportunity for him to call her out on that.

"At least she finally taught you a few things. Last time I tried doing something like this with you, you didn't have a damn clue what you were doing," she reminisced. "You're a little too eager to go for my clit, but...still, a marked improvement from your last attempt."

Like plenty of other males, Fenil was quick to loop his tongue around the sensitive nub of Katya's most sacred area, but he was still learning the intricacies of the different ways to touch every part of her body. She absolutely loved when his put his long, slick tongue on a downward path, pushing it through her petals and spreading them, but she didn't want to just give him that secret.

True as it was of everything else in their relationship, Katya was determined to make Fenil work for it, and learn everything through experience.

"Oh, good. You figured out that there's other things down there to play with," Katya taunted his progress and rolled her hips forward, pushing her tailhole closer and closer to the bridge of his muzzle. "If you keep on improving your technique, I won't make you eat your way through this, too."

Thinking her brother to be even more of a pervert than she was, she didn't know if putting out that kind of threat would actually dissuade him, or encourage him to screw up on purpose.

As much of a pervert as she was, she would have been more than happy and drop her pucker right on his tongue and force him to taste that entrance, instead, but he was getting better at bringing a pleasant shudder to her thighs, the longer she rested on his face.

She was starting to wonder if she just needed to find a better cushion to put on either side of him; she'd happily clear the rest of her schedule for the day if he was going to improve at such a rapid rate.

"Look who's finally coming to the party," she joked, seeing the way that his cock twitched in front of her. He'd gone stiff the moment that Katya pushed him back against the bed, and just as her mother advised, she was taking everything that she wanted by force, but it wasn't until his member began to quiver with excitement that she reached across his torso and gave the tip his length a playful stroke. "I was starting to wonder if you were even attracted to your older sister anymore..."

She loved teasing him about the incestuous bond that they shared, and feeling his cock simply jump at the delicate touch she offered, she knew that he was still turned on by the taboo just as much as he was by the contact. With a single, feathery touch, she traced her digit from the base of his length to the very tip, and she couldn't help a grin as she watched a drop of precum bead at the end and settle...until another twitch flung the clear fluid across his own tummy.

"Messy boy," she whispered, keeping as much of the offering as she could away from her scales. "To think you'd have such a strong reaction from a single touch...it's no wonder you spend so much time in the shower!"

To put up with so much badgering from Katya without having a chance to retaliate was a literal step back for Fenil, who had come so far in establishing himself as a respectable man. He took pride in the fact that he'd learned so much from his mother's homebrewed version of sexual education, but when it came down to it, Katya was the more determined of the two...and she knew how to keep her brother from piping up.

She could already tell that she was getting him drunk with lust, and she only served to make matters worse with a second stroke along the underside of his shaft. Putting his precum to work, she eased it into his tender flesh and slicked it, but she didn't give him the glorious treat of her tongue upon his tip just then.

In her heart of hearts, she wanted to, but she didn't hear a single whimper of protest, yet; her facesitting experiment doubled as a chance to teach him a lesson about standing up for himself.

"It'd be such a shame to let all of this tasty mess go to waste," Katya murmured. She kept her voice lower and lower, closer to a whisper as her brother started ramping up her physical delights, but she knew a moan would part her lips before too long. "If only my little brother could show me that he needed me to clean it up for him? He's being so quiet right now that I hardly know he's right beneath me..."

The warmth of his presence between her thighs was already pleasant enough, and with a twist of unexpected skill, Fenil pushed his tongue all the way from the bottom of her folds up through the part and to the top, where, after a lengthy break, he finally swirled the very tip of his tongue around her clitoral hood once more; his touch was impossibly delicate.

Sucking in a gasp and biting her lip, Katya suddenly wished she'd taken his cock into her mouth sooner.

"Okay, y-you...you've made your point," she whispered, managing to stifle her moans until she leaned across his torso and engulfed the tip of his member. "Mrn...mnnf!"

Learning the importance of a good warmup and a skillful follow through, Fenil didn't settle on her tender bud for very long. He gave only the slightest touch to the spot before moving back down through her folds, and that was what prompted the moan from her.

It was a sound of desperation, needing more than he was willing to give her. In silence, he enjoyed the fruits of his revenge, refusing to give her the satisfaction of feeling him moan into her pubic mound, even when she swallowed the whole length of his rod and rubbed her muzzle against his crotch.

Great. Mom encourages me to take what I want in life, and just when I think I've got the better of the little guy, he throws me that kinda curveball...can't stop fucking moaning!

Katya could have praised her brother verbally for his efforts, but the oral route was more direct and far more effective than that. She knew that she was still getting to him when a powerful throb rattled her throat, but for that moment in time, she didn't feel his tongue moving against her any longer.

He's really gonna start slacking off, just because he got the better of me for a minute?!

She wasn't sure if he was toying with her, or if he'd actually gone slack in the middle of the act. It frustrated her that he was lazing about for even an instant, and as her juices began to trickle down the underside of his chin, she pushed back with even greater weight, threatening to smother the poor boy if he didn't pick up the pace.

Giving herself such a head start on her pleasure left Katya in a position that she wasn't used to: she was going to have to bite back against her own physical release if she was going to outlast Fenil, and she didn't know if that was possible anymore.

The boy was just too skilled, and Katya couldn't help rewarding his efforts with a tongue bath for the ages.

Fine. If he's gonna become such an amazing lover in the span of a week, I'm gonna enjoy myself, Katya thought. And I'm gonna suck his balls dry...

Her tongue, lengthy and flexible, reached down past the bottom of his shaft and tickled over the smoother, softer flesh upon his orbs- that was all it took to break his silence- and stayed on that spot when Katya heard the glorious sound. His cry was muffled, but she could hear the strain in his voice all the same as she tickled and teased one swollen ball, soaking it and leaving it glistening before she made her way over to the other.

That she could do such a thing while keeping her throat swallowing around his shaft was more than he could handle while keeping his composure. For Katya, it was bittersweet to feel his tongue finally pull back from her tender, eager petals, but the sound of his whimpering voice left a fresh dose of liquid arousal to spill from her parted entrance.

She was grinning around her mouthful, just knowing that she'd reclaimed the upper hand.

"O-Okay, seriously...where the f-fuck did you learn to do that?" Fenil asked, gasping and throwing his head back into the mattress. He'd gone from just twitching at the air to being on the verge of a climax in the span of only a few minutes, and he knew that Katya had no qualms about making him finish quickly so she could start driving him up the wall again. "You've never...f-fucking done anything like that before!"

He was shocked that she would give up on that opportunity, but indeed, her tongue slipped back into her muzzle as she eased up from his impressive length. "If I gave away all of my secrets the first time we slept together, there wouldn't have been anywhere to go from there."

"You mean the fact that you're sleeping with your brother isn't enough of a rush for you?"

"Says that guy that's sleeping with his mom."

Flustered and annoyed, Fenil darted his eyes away the instant that Katya looked back over her shoulder at him. She was more skilled with her words, as well, and she knew how to get him to shut up without having to touch a single part of his body.

The latter method, however, always proved to be more fun.

"Don't worry...I'm still not gonna tell anyone your little secret. After all, you've got more than enough dirt on me," Katya continued. "So that just means I either have to keep your lips sealed, or keep you under wraps."

"I thought they were called folds."

"...You see, dorky comments like that are why I'm gonna sit on your face again."

Fenil was wise enough not to try and crack another joke at that moment. His sister's hips pressed down on his face with a rapid descent, and her petals spread even wider over his tongue as he pushed it right back into her body, penetrating the sensitive entrance of her womanhood.

She made it clear with a quick lash of her tongue through his trailing precum that she was done coddling him, but a deeper, firmer jab from his own slick muscle was his way of answering the call: the competition was officially underway, and they didn't know that they had a spectator.

"You should just save yourself the embarrassment and finish already," Katya warned him. She let out a warm breath over the end of his length and watched as precum answered her call, but just as quickly as she slurped it up, more emerged and begged for her to repeat the act. "You know damn well that you can't outlast me, Fenil."

They'd both hit something of a reset point with their unexpected breaks, but Katya was still at the advantage: her natural inclination was to last a little bit longer regardless.

Knowing that, Fenil repeated his earlier technique, but he threw in a twist, as his palms lifted from the bed and grabbed the full, smooth perk of her ass. With his own grin, he spread the cheeks wide apart and watched her tail lifting; she was so confident in her ability to outlast him that she was going to give her brother yet another advantage.

Truth be told, she just wanted to see how deep he'd probe his thumb into her asshole...she already knew what he was up to.

"Maybe I'm just trying to make sure that you go down with me?"

Katya was playing to win. She didn't think that Fenil would be able to swallow his pride deeply enough to go for the tie, but he was putting everything he had into slurping at her folds and bringing the cream of the crop out of her body.

He'd felt the trickling warmth of her orgasm in other places before, but according to her own claims, he'd never been able to get her off with his tongue alone, though that wasn't for a lack of trying. She could feel that he was going for new depths as his lengthy tongue pressed further into her clenching passage, but she found it harder to control those eager muscles when his thumb pushed past the first knuckle, burying itself into her tailhole.

Damn you, Fenil...get that out of there or you're gonna make me cum! She thought, refusing to let him hear what kind of desperation such a simple move could bring out of her.

As if he could read her mind, he only pushed his thumb deeper in, until Katya was doing all she could to push the naughty digit back out.

"You...t-think you're gonna beat me, Fenil?" she growled, keeping her tongue on the tip of his length, but silently refusing to engulf it again until he moved his palms away from her ass. "You really think that little trick is gonna work on me?"

"Already has," he confidently declared. He could hardly move his thumb any longer as she clamped down around it, but his tongue was spared that fate, as it dripped down from her petals a moment earlier. His spittle and her juices mingled down over his chin, until even his neck was given a hint of the glistening mixture...and he knew that there was still more to come before they were finished. "If I'm wrong, just let go of my thumb, Katya..."

She was able to focus enough to manage that act, but that he would be so arrogant against her was infuriating to her. "You...l-little shit..." she groaned, feeling the slow, playful jab of his thumb in her forbidden entrance. "Fine, Fenil. You w-wanna play rough, then?"

He answered with another jab of the tongue, right past the eager pout of her womanhood and into her dripping passage. He was on the verge of being addicted to the delicate flavors that her body produced, and he knew that she'd only make a bigger mess if he put up a fight.

Katya had always wanted to bring more of the alpha male out of Fenil, and while she always ended up getting the better of him, she was genuinely attracted to the effort, even when she knew she shouldn't have been.

"Guess that means playtime is over," she whispered out in a hurry, knowing that she'd lose the ability to put words together when his tongue flickered over her g-spot. "If that's how you want it..."

Her lips sealed just below the tip of his member and suckled harshly at the sensitive head, bringing even more vitality to the surface of the skin there. Her tongue, swift as a dagger and twice as deadly, flickered around the spot as she brought it to the forefront of her attention, until she was struggling to keep up with the oozing flood of his precum.

She was just confident enough that she'd have the last laugh to keep going, but she wanted nothing more than to let her brother display the impressive skills that he'd collected over the past few months.

If she didn't have something to prove, she would have gone completely still on his member and allowed herself to drown in the myriad of sensations that were washing over her.

Get that tongue off my g-spot, bro...please...

For all of the dominant spirit she had, she couldn't muster enough of it to resist the physical delight of her brother's skillful tongue upon the spongy flesh. He was attacking it, as if adding that pressure to it was the only thing that would allow him to breathe.

As deep as she forced him to reach with his tongue...that wasn't terribly far from the reality of his situation.

"You're g-gonna...pay for this," Katya threatened him as she pulled back from the tip of his length. She caught a spit of precum in the cheek for taking that break, but she knew she needed it: she fought back with a quick, messy squirt of her own ejaculate as her brother's exhausting routine _finally_brought her to a fluid orgasm. "You really t-think I'd let you get away with...m-making me cum first?!"

She threw her head right back down on his cock and engulfed it, bouncing furiously around the base and working her tongue along every inch of the shaft...but those desperate efforts were interrupted when she looked up toward the door.

"And you two really think I'd let you get away with leaving me out of the fun again?"

Katya rolled her eyes as her mother stepped in the doorway and gave a brief knock at the wall. Vania had been watching long enough to see the frustration in her daughter's eyes before the climax, and the utter pleasure of them rolling back for the duration of that release...but her son wasn't done yet, and now, her own appetite for his flesh was boiling over.

"Mom, don't you da-

"Sorry, sweetie...but I've been watching long enough. Seems to me that you still need a little more work with your oral skills...and I'm sure my son wouldn't mind a little extra help?"

Fenil was still licking the juices from his own muzzle as a second tongue joined the fray around his swollen, tender orbs; he was _seconds_from erupting, and there would be plenty to go around...