Adult-FanFiction.org : Harry Potter

Legacy of Lust	By : Ninny Category: Harry Potter > Threesomes/Moresomes Views: 36800 -:- Recommendations : 2 -:- Currently Reading : 2
Disclaimer: I do not own Harry Potter, nor any of the characters from it. I do not make any money from the writing of this story.

Chapter List
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Nymphadora Tonks, the only living metamorphmagus, had a secret: She lusted for his adopted 9 y/o brother Harry Potter.

It had taken her weeks, hiding from their parents was not an easy thing, but finally she had managed to sufficiently compel her younger brother, through the use of potions (both to slightly bound his will to hers' and to introduce a gradually increasing amount of lust into him) and some timely charms (thankfully their house was fully warded and capable of negating the Trace) she could see how, little by little, young Harry was becoming more... submissive, more pliant.

First it was how his hugs lingered for a little longer, how his body seemed to crave for her touch, how a few encouraging words managed to lit up his face and how she could easily ruin his day with a few harsh remarks (she had to train him), then came the "tasks" she gave him, to care for his looks a little bit more, to let his hair grow longer, to convince their parents to take him to a medi-witch so he could finally get rid of his glasses.

To "dress better" as she put it, first starting with some gender-neutral shirts and pants, moving onto a slightly more feminine apparel week by week.

She will always remember the first time he asked to use one of her knickers, she had never been prouder than that day.

Unfortunately his father, Ted Tonks, suffered a fatal case of dragon-pox and died early that month, leaving behind a grieving family of three.
Through their efforts, Andromeda Tonks managed get out of her mourning, basking in the care and love her two children (for she loved Harry just as if she had given birth to him) showed her. That extra attention to her two charges meant that, sooner or later, she would find out her daughter's ploy.
And find out she did.

She was mad at the beginning, Nymphadora was grooming Harry in the same way that her family tried to groom her but... After a long discussion with her (and a surprising use of logic on her daughter's behalf), she finally conceded and agreed with her.

So long as she would also be able of having a turn at him.

And so, Harry's grooming became a usual thing in the Tonks household, with the mother and daughter duo becoming more brash on their attentions and his "training", even their wardrobe (at least inside the house) changed, going from the somewhat casual muggle-wear they had to a more risque one, leather panties and bras were the norm, sometimes even full-leather dominatrix-like ensembles were seen (all so that young Harry's mind could grow accustomed to his new role in life, a submissive sissy slut).

It was finally the day, then. Through trial and effort, Nymphadora managed to do what once was thought to be impossible, a partial gender change, giving her the reproductive organs of a male while still retaining a female figure. Not willing to underestimate the "training" her little brother had been through, she pushed her abilities, forming a 14" long, 3" thick horse-shaped penis, ready to plunder the virginal rosebud of the little boy that sat transfixed on the sofa, watching with lust and a little bit of trepidation the massive hole-wrecker that appeared out of seemingly nowhere.

Andromeda was, of course, present and while she also sent and admiring gaze at her daughter, her eyes quickly fixated on the submissive sissy that was sitting by her side, with glee she could see how his tiny clitty was erect! (just that week has Harry's wardrobe been modified for the final time: he was to be naked at all times, if possible, whilst inside the house, for outings he would wear only the most girlish apparel they could find)

"You know, dear," said the older woman, "I think you have done a wonderful job."

"Thank you, mummy!" Nymphadora replied with a smile, "Now... come here and sit on my cock, slut" She ordered her younger brother.

Harry looked at her, confused (he knew not how such a thing was ever going to fit inside of him), but he knew he had no other choice so he got up and approached his sister, climbing onto her lap and positioning his rosebud on the tip of her shaft (thank Merlin she conjured a copious amount of lube on her cock!) and, like a good little sissy, started lowering himself down.

"Oh my god!" Nymphadora moaned, as she could feel how, inch by inch, her brother's greedy hole was slowly accepting her massive shlong. Soon enough he had managed to get over half of her cock inside, and she couldn't help but moan with pleasure at the feeling of stretching his tight sphincter around her meaty pole.

"Take it, baby!" Andromeda watched with pride as her little boy worked his way up to the massive task ahead, not willing to be left alone, however, she quickly sat by her daughter's side, mercilessly teasing his nipples whilst whispering lust-induced fantasies to his ears, giving the occasional slap to his smooth balls.

"I... I don't know if I can go further, sis..." He was obviously struggling to fit the entire meat-pole inside his ass.

"Just relax, honey, and you'll make it!" Nymphadora encouraged him.

"Mummy... are you sure this is ok?" The poor lad sounded worried.

"Absolutely, darling," Andromeda smiled, "if you set your mind to something, I'm sure you'll accomplish it"

With the words of encouragement and the loving looks he was receiving from his family, Harry managed to get the rest of her cock inside.

He felt completely stuffed now, his asshole stretched beyond its limits, a feeling of achievement rushing through his spine as his biggest desire was fulfilled, finally he was one with his sister.

"I knew you could do it, Har-har" Tonks whispered to him, lovingly, giving him a kiss in the brow. "Now, hold on tight, I'll start moving" she added, preparing for the big moment.

"Yes, yes, oh god, fuck me, fuck my ass, please, just fuck my ass, sister, take it all!" Harry moaned, his mind already lost in pleasure as the massive piston inside him made him cum, over and over, each thrust mercilessly stimulating his small prostate (which had been made, incidentally, extra sensitive thanks to his potion regiment).

Andromeda watched with a smile on her lips as her son's little hole was filled to the brim, his soft pink insides clutching the massive shaft tightly, getting pounded into him by the massive black tool.
After what felt like hours, Tonks seemed to finally be reaching her limit, so she grabbed him tightly by his hips and started increasing the rhythm of her thrusts.

"Nym... please, I... I cant...." Harry incoherently mumbled, his thoughts a mess as his hands were holding on to whatever surface they could, desperately trying to keep his balance as she relentlessly rammed her massive cock deeper and deeper inside his tight hole.
Soon enough, the frantic pounding got too much for the boy and he exploded again (this time in a truly spectacular fashion) screaming in ecstasy as his sister's huge schlong managed to push his internal walls past the point of no return, depositing a veritable amount of cum on the inside of his body.

So much was the cum she let inside that it made him burp.
When Tonks finally pulled out, she saw her own cum seeping out of her brother's asshole, a sight which made her so horny she couldn't help but give him a passionate kiss on his forehead, before laying back tiredly into the sofa.

"Well, dear," Andromeda said to Nymphadora, whose breathing could clearly be heard in the room, her legs spread wide, "how'd you like that?"

"It...It was... Amazing…" was all she could manage through her labored breaths.

Andromeda gave a happy nod, too transfixed in what just happened to say anything more.
But Nymphadora was not done yet, she had another trick up her sleeve.

"I think... he deserves a... treat" With those words she turned towards Harry and started undoing the buttons of her blouse, revealing her large breasts, heavy and ripe for the taking. Her nipples were already hard, begging to get sucked, her fingers grabbing her brother's head eagerly and pulling him closer, his tongue soon finding its way to her areola and her taut nipple.

"Mmmmmh... that feels sooo good, Harry, suck them, suck my tits, that's a good boy... give mummy some relief after that fucking" Tonks moaned, encouraging her little brother as she felt the vibrations of his talented mouth on her chest. Soon enough, a warm liquid emanated from them, re-energizing the submissive sissy (that the milk tasted like strawberry was an added bonus!).

Finally stepping out of his cum-induced daze, Harry decided that he should repay his sister back, so he lowered his head and started licking his sister's flaccid dong with gusto, slurping up every drop of her gooey mess left behind.

Andromeda couldn't take it anymore, whilst she knew she would not be able to fit Nymphadora inside her, she settled for the little slut that was now lapping her daughter's cum.

"That's it, honey, lick it clean!" She encouraged him, "it is your duty to serve your sister and make her feel good, isn't it?"

"Yes, mummy, it is my duty..." Harry answered obediently, gulping down the last drops of her cum.

"Good boy, you're doing great, just keep going, there might be something else for you in here" She said, moving her hand between her thighs, feeling the wetness of her juices on her pussy, "but before we get to that, I want to reward you for being such a good boy" With that, she pulled his face away from her crotch and straddled his face, spreading her legs and letting him feast on her dripping twat, his tongue diving deep into her hole, tasting her sweet nectar.

"Oh, yessss... that's it, just like that, lick me, love me, eat my pussy, baby, that's it, eat your mother's pussy like the good sissy you are!" Andromeda moaned, enjoying herself immensely as her son ate her out.

From that day forward, the livelihood at the Tonks house changed for the better, even the way they addressed him changed, whenever they were having sex he was only referred to as a "slut" or as "sissy", never by his name, on the same coin, he could only refer to them as his mistresses. Likewise his "tasks" evolved, now he was expected to be ready to please either or both of them.

With Tonks going back to Hogwarts for a good chunk of the year, Harry thought he would start feeling lonely, thankfully for him, his mother, Andromeda, was up to the task of keeping the little sissy busy, whenever she returned home from work she always tasked him to lick her feet, pussy and asshole clean (sometimes she relieved herself in his mouth, depending on long her work shift was). She could still remember the first day she defecated on his mouth:

Harry was there by the floo, he knew his mistress would be returning soon (she sent a Patronus beforehand so he could be ready for her), he knelt on the floor, patiently, naked as the day he was born except for a little choker on his neck (Andromeda had never tried it but she knew she could attach a leash to it, effectively making her little boy nothing more than a pet). When the floo lit up and she emerged from it, he instantly knew something different was going to happen. Usually she greeted him lovingly this time, however, she seemingly ignored him, tossing her robe on the sofa and quickly pulling up the dress she was wearing. Immediately Harry saw the sweaty brush of her mother's (she rarely wore underwear anymore, and when she did it was only to stuff them into her sissy's mouth once she got home).

With haste and without mingling words, she bend over a little, pushing the slut's mouth right atop her asshole (Harry was a good sissy and thus knew better than to put any kind of resistance against his mistresses).

"Prepare, sissy, I've had to take a dump for a while and couldn't find time to do it while at work" Andromeda semi-ordered, not really thinking on the boy's reactions and instead concentrating on the task at hand.

A flash of horror and token defiance appeared in Harry's eyes, unfortunately no one could see them as his whole face was being firmly pressed into his mother's ass.

"Sissy!" She hissed, "you know you have no choice but to obey me, don't you? So make yourself useful and prepare my asshole, I want it nice and clean for when I take a shit!"

Diligently following her orders, Harry's tongue started tentatively licking her warm rosebud, sluggishly pressing a little bit harder until he found the spot that made her moan with delight. His tongue lapped at her asshole, his nose buried into the crack of her ass, the smell of shit and sweat filling his nostrils as he went about cleaning her out.

"Ahhh... Yes! That's it, baby, here I come, sissy!" With a grunt, she let out a fart that soon filled Harry's mouth. While supressing the need to gag, he readied himself for what he knew would soon follow. And indeed, seconds later, the first turd landed right on top of his tongue, forcing it further and further inside the boy's mouth.

"Ugh... Yuck..." He groaned, but the sensation of getting her waste inside him was too strong for him to resist. It wasn't long before he felt the second load land on his tongue, followed by a third one, fourth, fifth, sixth, each one pushing the preceding one deeper and deeper into his throat. He really wanted to gag, but he held on, determined not to fail his mistress, diligently swallowing turd after turd.

Finally, when he felt his mistress' asshole getting less and less active, he dared to breathe through his nose, a cloud of stench escaping from his mouth. His mouth was full of shit, his cheeks bulged outwards as if they were going to burst open, but somehow, he managed to swallow everything.
With a sigh of relief his mistress stood up, quickly flicking her wand at her backside, vanishing any trace of her mess from her body (and from Harry's face).

"Good slut," she cooed, "I'm glad you were able to hold it in that long." She looked at him proudly, watching as his throat moved, no doubt swallowing her brown surprise, even as tears came down from his eyes.

She glanced at the piss that now pooled on the floor, however, and instead of vanishing it with her wand as well, she used it as an excuse to punish her little slut.

"Now, now, sissy," she purred, "you're going to clean that up with your tongue, aren't you?"
With a nod, Harry bent over and started licking the piss off the floor.

Andromeda chuckled as she watched her son licking her piss off the floor, she couldn't wait to inform her daughter of what just happened. Still, having seen the reluctance on his eyes, she decided that future "sessions" would be few and far between.

"I just hope Nymphadora can control herself" she hummed.

//LoL//

Nymphadora eagerly waited inside the Hogwarts' Express, her mother had only sent her a cryptic letter, hinting at some surprise she would receive once she got home but with little else.

Of course she knew it had something to do with their little "pet", the past couple of months had been torture for her, she only had memories of the debauchery that happened at her home to keep her company on the lonely nights at the castle, her lust never fading away (she would not even consider having a casual relationship with any of her "peers", she was content to wait to ravage her little brother), her mind started imagining scenarios with the young sissy waiting at home.

"I really need to upgrade his wardrobe too" she thought, her pussy grew moist just at the thought of parading the slut around muggle London, with skimpy clothes or with none at all (under a disillusionment charm, for now), of claiming him on dirty alleyways or in the middle of a busy street, right under the noses of all the passers-by.

Even if she relished on those fantasies, she knew she would be hard pressed to share her toy, including her mother in the whole deal was already pushing the line, as far as she was concerned. What they had was perfect, she was certainly enjoying her time with Harry, getting him ready for life as a sissy, giving him a proper education in how to please a woman, how to dress and act like a sissy, how to beg for anal sex, how to cater for their every desires and much, much more.

It was with those thoughts that the train finally reached King Cross' station, she couldn't get out of it quickly enough, barely waving goodbye to her acquaintances and rushing straight to the point where, she knew, her mother was waiting.

"MUM!" She called, running towards her mother.

"There you are!" Her mother exclaimed as she embraced her daughter, "so I see you got my message, figured out what's in wait for you tonight?"

"Haven't the foggiest" she stated with barely suppressed excitement, "I honestly don't think I can wait".

Her mother merely laughed, taking her daughter's hand and apparating into their house, directing her into the dining room. There she found Harry waiting on his knees, at the side of the dining table, wearing nothing but a choker on his neck with his luscious hair done up in a ponytail, all her mother could do was smile at the sight.

"There you are, my little slut, you look perfect, just as I imagined, so much better than the pathetic thing you were when we first met, you really have grown into a stunning sissy" she complimented him.

"Thank you, mistress" Harry said, bowing his head in respect.

"So, sissy, tell me, what did I tell you would happen once you returned home?" Her mother asked playfully.

Without batting an eye he approached Nym, taking off her shoes and socks, relishing on the sweaty aroma that emanated from them. After removing them, he proceeded to unbutton her skirt, revealing that she wore no panties (as her mother's letter had instructed her), directing his sister-mistress to a chair, he started cleaning her feet, one digit at the time, with his mouth.

Somewhat dumbfounded by his actions, Nymphadora shot her mother an inquisitive look.
Andromeda chuckled "I made sure his training continued, he is tasked to completely clean my feet, pussy and asshole every day after coming back from work" she told her proudly.

"But... But!" She could hardly form any words at that revelation, her pussy instantly grew moist at the image of her sissy brother lapping all the sweat and grime from her mother's body.

"I'll admit, I had to use some force at first but he took to the task with such eagerness , I figured it was time to push things further" her mother added "you'll see the result of his training after we eat..." she whispered in her ear with a teasing voice.

"I will?... Yes... I will" she managed in between her labored breaths, Harry had started licking her pussy, as it was easily accessible, delighted to taste the juices coming from her sister.

"Enough of that, slut, serve us dinner" Andromeda commanded as she saw her daughter was close to climax, she wanted her as horny as possible for what was to come.

"Mistress" Harry nodded, disappearing into the kitchen only to come out a few minutes later with a catering cart, expertly he put the dishes and the meal on the table. Nymphadora noticed that the table was only set for two people, however.

"Is Harry not joining us for dinner?" She asked, genuinely curious. At the end of the day, they both cared for and loved Harry, even if he was treated harshly or too roughly, they could not love much more than what they did.

Andromeda's smile grew devious, a mischievous glint entering her eyes, "No, dear, the slut will not eat the meals he prepared for us, in fact, he'll eat after we finish dinner."

Nymphadora's eyes widened as she heard that, her mind racing, trying to figure out why her mother would want to do such a thing, even if he was a toy, she still didn't understand why her mother would subject her to such a disgusting treatment.

"It'll all make sense later, dear" Andromeda assured her daughter with a loving smile "Don't jump to conclusions yet."

"Ok?" was all she said before they both started eating, Andromeda seemingly without a care in the world, Nymphadora a bit more reluctantly. Meanwhile Harry assumed his place, knelt at Andromeda's side.

Dinner went by, filled with small talk between mother and daughter, though Nymphadora could feel her mother's eyes on her constantly, she tried to ignore the feeling.

As dinner came to a close, Nymphadora realized she had to use the bathroom, so she excused herself and tried to stand up, only to realize she was stuck to her chair.

"What's wrong, darling?" Her mother asked playfully, noticing her struggles.

"A-ahhhhhhhh!" Nymphadora grunted, unable to lift her legs from the chair, as her mother's enchantments were keeping her firmly seated.

"Mum... I-I need to use the bathroom..." She explained.

Andromeda smiled, her eyes twinkling, a wicked grin forming on her lips.

"Oh no you don't" she declared.

"W-what?" Nymphadora asked, confused.

"I told you there was a surprise waiting for you. Slut, you know what to do" she ordered.
Nymphadora felt her heart skip a beat, not fully comprehending just what had her mother planned for the night.

Obediently, Harry took his place behind his sister's chair, with a flick of her wand, Andromeda changed it's shape so that her rosebud was easily accessible.

Only now did it started to dawn on his sister's mind the "surprise" her mother had planned.

"Mum.." she started nervously "Surely you don't mean for Ha-the slut to-" "I told you he would eat after us" Andromeda cut her promptly.

"But mum he's…"

"Hush, dear, he knows what's to come so just... relax and enjoy it"

Indeed, Harry started licking the ridges of her anus, closing his lips on top of her whole and eagerly sucking her out. Nymphadora moaned softly, her hand going to her pussy.

Through his ministrations, all the restraint Nymphadora had were easily thrown away, with a moany grunt she started excreting directly into her brother's mouth!

Andromeda chuckled as she watched her daughter's predicament, she had been planning this for some time, and it seemed she had succeeded.

Harry's tongue swirled around her daughter's asshole, savoring the taste of her shit, he had grown used to the flavor of it (not that he particularly liked it but at least it didn't make him gag anymore).

"Mmm, that's it, let the sissy slut eat your ass while shitting" Andromeda teased, a proud smile on her face, awing at the scene unfolding in front of her.

"Ahh.. AHHHH!" Nymphadora moaned, a mixture of pleasure and relief washing over her as Harry ate her out, his tongue and lips working in tandem, making her cum.

Harry kept licking her until she finished, greedily swallowing the brown slushy, it had been two days since he last ate (on her mistress' orders) after all.

"That's it, you beautiful little slut, you're a natural. Now get up, go clean yourself and join us for dessert" Andromeda ordered.

"Yes, Mistress" he replied, crawling out from behind her chair, looking at her with lustful eyes. He could hardly wait to be fucked by them both!

Whilst the sound of a shower could be heard, Andromeda took sight once more of her spent daughter. Panting, she finally managed to stand up, the sticking charm applied to the chair undone now that it had fulfilled it's purpose.

"So... how did you like it?" Andromeda asked her saucily.

"Uh... It was very nice..." Nymphadora stated shyly.

"Good girl," Andromeda commented, smiling.

The shower stopped, minutes later Harry joined them at the dinning room once more. Without much ado he bent over the table (as previously instructed), a pink-colored buttplug could be seen in between his ass cheeks.

"Are you ready for dessert?" Andromeda asked him, teasing him with a grin.

"Y-yes, Mistress" he responded, diligently spreading his cheeks, giving his sister a prime view of his plugged asshole.

Nymphadora couldn't help but stare at her brother's ass, she had misgivings at first but that night was quickly turning out to be the best night of her (young) life.

"Go ahead, my little slut, eat your dessert" Andromeda ordered whilst conjuring a realistic-looking strap-on on herself that, whilst shorter and thinner than his sister's horse-dick, was still standing at a proud 12" long.

"Yes, Mistress" he said, immediately taking the magical phallus in his mouth.
Not wanting to be left behind, Nym proceeded to tug on her brother's buttplug, marveling once again as he saw his sissy hole expand, the plug had to be at least 4" at it's widest (which was actually most of it's body), with bumps and contours designed, no doubt, to provide a constant amount of pleasure to his little sissy.

Finally watching the unplugged entrance of his brother, Nymphadora quickly used her natural talents to grow, once more, her famous horse-dick.

This time she had grown it to a respectable 16" and it was at least 4" thick.

"Fuck!" Harry moaned from between her mother's legs.

"I thought you'd like that, slut" Andromeda remarked, smirking.

Nymphadora had a look of pure bliss on her face as she rammed the massive bitch-maker into her brother's ass, her hips pounding his prostate relentlessly, fucking him hard and fast.

Nymphadora was enjoying herself, she wasn't going to hold back, not tonight. The fact that her mother was watching made her hornier than ever.

"Mmmmmmph!" Harry moaned, his hips buckling at the relentless thrusts of his sister-mistress.

"How does it feel, slut?" Andromeda asked, her voice dripping with honey.

"Mmmmmm... It feels good" he panted, his tongue moving all over, licking every inch of her dildo with devotion.

"Good boy" she cooed as she passed her fingers on his beautiful hair.

"You like being my sissy whore, don't you?" She asked him, grabbing a fistful of his hair and pulling him back towards her.

"Yes Mistress" he replied, unable to stop himself from obeying her commands.

She bent down and started kissing his neck, biting his ears and occasionally whispering filthy things to him in that seductive tone of hers that drove him crazy.

"You want my big cock inside you, don't you?" she asked him, a wicked grin plastered on her lips, he nodded.

"Yes Mistress" he moaned, already getting wet.

"Then say it" she demanded, her voice becoming stern.

"Yes Mistress, I want your big cock inside me" he said, in a deep voice.

Nymphadora chuckled, amused at her brother's eagerness, she increased the pace of her thrusts. The slut was not leaving the dinning room that day on his own feet, not if she had anything to say about it.

"Tell me what you are, slut" she commanded.

"I'm a sissy whore who worships your cock, Mistress" he replied proudly.

"Good slut. Now you know what to do when I tell you to do it" she said, a mischievous smirk forming on her face.

"Yes Mistress" he said, nodding.

"I think you deserve a reward, slut, don't you?" she asked him, her voice softening, almost as if she was asking for permission.

"Yes Mistress, please" he replied, eagerly awaiting her next command.

"Good boy. But first, you'll need to clean the strap-on off, you dirty slut" she commanded.

Harry moaned as his sister grabbed his head and started pushing the dildo-monster into his mouth, moaning as he sucked on it, cleaning it.

"That's it, suck on it, slurp on it" Andromeda encouraged him, her hands on his shoulders.

"Mmmm mmm MMMMMM" Harry moaned, his face buried in her crotch.

After a few minutes of hard work, he had cleaned it to perfection and Andromeda was satisfied.

"Now for your reward..." Andromeda conjured a cock-ring, attaching it to Harry's ballsack with a simple spell.

"Mmmph!" Harry moaned as they tightened, his face turning red in pain.

"Good boy" Harry surrendered to the pain and pleasure, it wouldn't be until much, much later that his sister finally climaxed inside of him, coating his insides white.

After cleaning and vanishing the mess left at the dinning room, Andromeda carried her little boy lovingly into their shared bedroom (after growing into his new position in life, his mother and sister decided that they would all sleep on a single bed).

Nymphadora followed close behind, her eyes locked on her brother's well-endowed ass.
As Harry lay down on the bed unconscious to all, his sister crawled underneath him, rubbing her face against the crack of his ass, tasting her own juices mixed with the taste of his ass.

"Mmm... It smells so good" she cooed, kissing his ass cheek.

With a quick kiss on his ass, she then moved onto his stomach, planting a few kisses all along his abdomen before reaching his cock, which she began licking with gusto.

"Mmm, it tastes even better than I expected" she whispered to herself, her tongue swirling around the head, using it as a lollipop, sucking it like a baby.

She continued doing so as she reached for one of the many vibrators she had collected, taking it in her hand and activating its magic before sliding it into his asshole.

"Mm... Mmm... Mmm... Mmm" Harry moaned, his cock twitching in response.

Nymphadora smiled, happy to see that she was pleasing her little brother so much.

"Now, dear, let your brother sleep, he had a tiring day after all" her mother called from the other side of the bed.

Yawning, she acquiesced "Okay, mum, G'night"

"Good night, dear"

Indeed, Harry's days were only getting better and better.
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Legacy of Lust