A new school year had begone and, as so often, Hogwarts was welcoming a new staff member. Past year, it had been Narcissa Malfoy's turn to be presented to all students as the new Defense Against the Dark Arts teacher. Both her collegues and students had been more than sceptical about her arrival. Even though she hadn't taken part in any Death Eater attacks, she had still been maried to one. But as Narcissa said herself – and soon proved in her behaviour – she was never a firm supporter of the Dark Lord. She never came to regret her husband's death and even though she had loved Draco very much, she knew that he would have turned particularly wrong if he hadn't also passed during the battle.

So, all in one, Narcissa was happy to be on her own and thus, to be able to start a new life. A life so new, that she had recently changed her name back to Narcissa Black. But what Narcissa liked most about her new freedom, was her retrieved ability to engage in various relationships. Before she married Lucius, she had been quite famous around Hogwarts for her numerous conquests; one them being none other than the stunning Lily Potter – though she denied that information to her very last day at Hogwarts.

But recently, Narcissa could pride herself on conquering yet another brillant and handsome witch. The very witch that had become her newest collegue a few weeks ago, after she had been her student the year before: Hermione Granger. The relationship they had shared for a few months during Hermione's seventh year may have been a matter of sincere feelings, but if it had, none of them ever said a word about it. They would meet in Narcissa's office or even her classroom after hours, and fuck until one of them collapsed. The one time Narcissa had talked to Hermione after sex, the young witch had gotten so scared by her feelings that she never came to see her again.

Yet now they were sitting next to each other in the Great Hall every morning, every day. And Narcissa had tried to talk to her; about the weather, some troubling students or even the lastest Quidditch match – and Merlin knew how less she cared about Quidditch – but Hermione had never graced her with more than a few polite words. So Narcissa had decided to take her actions further. She knew for a fact that Hermione's weak spot had always been her legs – how could someone blame her for that? Narcissa's legs were sin. Therefore, from day to day, she proceeded in shortening her robes inch by inch. Today, the hem of her teaching dresses were finally resting over her knees; miles higher than Minerva's emerald excuse for a dress. Yet Hermione's eyes couldn't detach themselves from the elder Headmistress.

As she sat down next to the young Potions Mistress, Narcissa let out a long sigh and her dress reached her mid-thighs in her seated position.

« Quite an interesting choice of clothing, Narcissa » Hermione absent-mindedly commented while pouring herself a glass of pumpkin juice.

« Oh so now you are talking to me? » Narcissa hissed, low enough to keep their neighbours out of their conversation.

« Is there something you want to tell me? » Hermione asked, yet without crossing Narcissa's look.

« There a quite a few things I would like to tell you, Hermione. But not here. Just come to my office tonight, we need to talk things over ».

« I am sorry Narcissa, but tonight I have a meeting with our Headmistress. We need to discuss when and how we will organise the commemoration. Last year has been a mess and the late deserve better than a few half-baked quiches and your lack of talent at playing the harp » Hermione coldly answered.

« I beg you pardon? » Narcissa exploded. « If you must know, I have been playing the harp for longer than you've been born! ».

« And yet, the result is quite … disappointing … »

« Enough! Now don't try to tell me that being the Potions teacher turns every well-behaved witch into a Snape! What have I done to you to deserve such a cold shoulder Hermione? »

Narcissa's tone had risen high enough for Minerva to throw them a few worried looks now. Hermione waved the Headmistress's worries away with a calming hand before she finally turned to Narcissa.

« You should be the one doing the explaining. December last year you tell me that you would be more than happy to see Minerva and I finding back to each other and the minute we do, you try everything to seduce me! » Hermione coldly explained, a threatening vein pulsing on her forehead.

« Please … You were already cold with me before I started dressing like a common whore », Narcissa waved her off. « But now I get it. I don't need to wear ridiculously short dresses to arouse you » she slowly whispered. « And that is why you're so mad and keep watching Minerva so forcefully. You're scared that she will notice, because you never told her that I was getting you off while she ignored you. »

To her greatest displeasure, Hermione felt a rush of heat filling her as Narcissa's words imbedded in her ear. She tried to shake her arousal off by biting off a great piece of gingerbread, but Narcissa only smirked at her wide-open mouth.

« I am quite pleased to see that you are still so good at putting big pieces in your mouth » Narcissa commented.

Hermione instantly choked on her bread and Narcissa mocked a worried look as she padded her back. « Breathe Hermione, I wouldn't want you to choke on it » she mused.

Those were the last words it took Hermione to go back to that one time Narcissa had kept a little « surprise » for her. It was Christmas holidays and Hermione had found an anonymous card in her defence against the dark arts book as she came back to it in the library after a short break. « 9 o'clock, top of the Astronomy Tower, no wand, no underwear ». She knew Narcissa's handwriting by heart. Her heart already started pumping wildly at the thought of tonight's events. Narcissa's had been dropping hints at her for weeks now. She just kept talking about a « big » surprise for her.

Shortly before nine, Hermione, alone in her dormitory, slid her knickers down her slim legs and rested her wand on her night table. In the corridors, the cold winter breeze quickly hardened her nipples underneath her white blouse and tickled her exposed parts. By the time she reached the top of the Astronomy tower, her nipples had grown rock hard and printed two remarkable pebbles on her blouse. The blood was rushing in her cunt in a vain effort to heat her parts. She hadn't even seen Narcissa yet, but her walk had already made her feel so naughty that she wanted nothing more than to be spanked into oblivion.

Narcissa had other plans. She had cast a few spells to keep the top of the tower warm and free from intruders. Not only because she didn't want anybody to interrupt, but also – and mostly – because she was already striped naked, leaning against the central structure. Hermione's jaw dropped instantly as she saw her and she felt herself getting a little wet already.

" Come her, on your knees" Narcissa commanded, indicating the spot right in front of her.

Hermione didn't think twice and threw herself at Narcissa's feet. Only there did she finally discover what her "big surprise" really was. And "big" was the right word indeed. She knew that some lesbian couples did that, but she had never experienced it herself. Indeed, where normally Narcissa's clit would have been hidden between her folds, a two-inch-wide and at least seven-inch-long cock was resting. No, not resting. Rather tauntingly towering towards Hermione's trembling lips.

" You know what to do" Narcissa smirked at her. Hermione's heart started racing. She had been with a guy, once. But it was Ron; he had played a bit with her breasts, plunged his dick inside her a few times and it was over. She had never even tried to take his dick in her mouth, and his was significantly smaller and narrower.

"I am not asking, dear, I am commanding" Narcissa rushed, tightly gripping her hair. Hermione open her mouth just soon enough to receive Narcissa's member. She hadn't even taken half of it between her lips that she already felt herself choking.

"Easy now" Narcissa soothed her "Breathe Hermione, I wouldn't want you to choke on it". Sensing a challenge in the older woman's voice, Hermione did her best to relax and started twirling her tongue around Narcissa's engorged clit. "There you go …" Narcissa praised her, tilting her head back as the pleasure started building up. Liking the muffled moans Narcissa was starting to give, Hermione grew more confident in her work and started bobbing up and down her length, taking more and more of her into her mouth.

By the time Narcissa's thighs started trembling from the pleasure, she grabbed Hermione's shoulders and hoisted her up. The younger witch had only just gotten to her feet that Narcissa plunged her slick cock into her wet cunt and started pumping into her in earnest.

"Oh Merlin … Nar … cissa … I … Ooh "Hermione moaned. She had gotten so wet by Narcissa's moans that the huge cock easily slipped into her folds and she adjusted in no time. Even though it felt good, Hermione was slightly disappointed. She liked it when sex hurt just a bit, when it was just rough enough to leave her sore for a few days after. It was for that kind of sex that she went to Narciss. So when she'd seen her huge cock, she thought that she would get it.

"Don't worry, you'll be regretting that thought very soon" Narcissa promised her, the skilled legilimens that she was having read every thought Hermione just had. She continued thrusting into her until she was once more on the verge of an intense orgasm. Fighting her urges, she turned Hermione around and bent her over the guard-rail of the tower. It was just high enough to offer Narcissa a perfect view of Hermione's cunt from behind. The witch's skirt, in this position, hid nothing of her glistening folds and her perky ass. Narcissa licked her lips in apprehension.

" Don't turn around and stay in this very position" Narcissa warned her while kneeling behind her. Hermione tried not to be embarrassed at the thought of Narcissa's head being so close to her rear; that try succeeded for she instantly grew wetter at the thought of what this position usually implied with Narcissa. The older witch smirked while still reading Hermione's mind. She slowly lapped at her cunt before lazily shoving two fingers in her opening.

" So I take it that you liked our latest 'detention' … what a little slut you make …" she mused. She knew Hermione loved being slightly insulted or humiliated when it came to sex. She liked feeling someone was in charge of her and dominated her, she liked knowing that someone was taking control of things and she didn't need to worry about a thing. "Don't you?"

Hermione kept silent, both because she tried to concentrate on the fingers in her cunt and not the wide emptiness beneath her eyes, and because she couldn't bring herself to say these words. "Don't you?" Narcissa repeated, adding a third finger into her cunt. "I … Ooh …". Seeing Hermione's lack of cooperation, she took her fingers back and started jerking herself off, lubricating her cock with Hermione's juices.

"No!" Hermione protested. She started wriggling her arse in the air, clenching her thighs together in a desperate need for friction. Narcissa smirked to herself again and started to lightly blow on Hermione's folds, all the while stroking her cock. "Ah! Please! Narcissa" Hermione moaned in discomfort.

"Say it!" Narcissa commanded before she started blowing again.

"Alright!" Hermione suddenly screamed. "I like it when you take my ass!"

Narcissa laughed briefly, gloating over her victory. "Oh dear …" she mocked, gathering a bit of her juices on a finger and travelling to her tighter pucker. "I didn't 'take' your ass. I only played around a bit, like that …" she argued, pushing a finger inside Hermione's hole.

"YES!" Hermione screamed, surprised by her own pleasure. But she didn't care anymore. She was over-sensitive and needed Narcissa, now. "What are you waiting for then? Take me! Take me!" she cried, nearly out of her mind from wanton.

"My pleasure …" Narcissa murmured. She took each cheek into a firm hand and pushed the tip of her engorged clit against Hermione's hole. Hermione, on her side, was pushing her ass back to meet her member, now trembling in need. Then, with one strong hip movement, Narcissa buried herself in Hermione's arse.

"OOHHH!" The two women moaned. Hermione's arse was so tight around Narcissa's dick that she came instantly, her juices running down her thighs as she screamed Hermione's name. As she heard Narcissa coming, Hermione grabbed behind her and reached for Narcissa's hips, forcing her to move. "You are not done here!" she bellowed.

Narcissa quickly tried to collect herself and started moving inside Hermione's arse. She was in heaven. Hermione herself was wincing into the dark night. It was burning, it was burning really bad. And Narcissa kept quickening her pace. But Hermione knew, from all the time she had played with her favourite toys, that it would only get better from now on. And she was right because the pain started to fade away to be replaced by raw pleasure.

That night she came so many times that she stopped counting. Had most students not been at home for the holidays or fast asleep, they would have heard her screaming from the top of the Astronomy Tower all night.

Hermione finally swallowed her piece of gingerbread. She was definitely soaking wet under her thick black robes. She could neither look Narcissa nor Minerva in the eyes. She had never been able to tell Minerva how much she liked that kind of sex. And if she looked into Narcissa's eyes right now, she would only drag her into a nearby broom closet and beg her to take her arse, no matter if the whole Great Hall could hear them.

Hermione breathed in slowly and stood up with the little dignity she had left. "If you'll excuse me" she muttered before leaving her seat. She was about to leave the table as well, just when Narcissa took her hand and spun her around to face her. Hermione clenched her thighs together at the sight of Narcissa's displayed legs.

Maybe one last time wouldn't hurt …

Please leave a review! Tell me if you'd like a sequel!