"A little late for using the library, isn't it, pet?". A smirk was thrown at the teenager as Bellatrix finally broke the silence, the gloom having been chased away by the floating candles the professor had already made flare to life. Caught like a deer in headlights, the Gryffindor found herself unable to look away, those saxe blue orbs glinting at her with an amused satisfaction tempered by something else. 'Arousal?' she silently questioned herself, her cheeks flaming as red as the barely there sleep set she was wearing, her mind questioning why she even cared if the Professor felt that way about her, her body betraying her as she felt a rush of wetness between her legs.

Crossing her arms protectively over the censored book, she pressed it over her chest, the coolness of the cover only serving to make her nipples harden beneath the thin cotton of the cami top. " I-I...I had some homework I needed to finish and as I couldn't sleep I thought I'd make use of the time"

Her tone was defensive, a note of lust lacing It as she spoke, but even to her own ears, it sounded like the lie it was. As she had spoken her gaze had migrated to the right, her head tipping down slightly as she avoided Bellatrix's too knowing smirk. The sudden grip on the book jolted her and finding it wrestled away from her grip Hermione held on tighter, her fingers scrabbling at the binding until she was forced to relinquish it. Taking a step back Hermione bit her bottom lip while her eyes flared wide, cheeks reddening even more at the cackle reverberating through the space.

"I wasn't aware we studied.. biology..at this school.." trailing off she snickered at the teens obvious embarrassment and let her eyes wander over the expanse of olive skin in front of her, letting her gaze linger for long moments at the girls red cotton covered mons before dragging her eyes higher to focus on the hard nipples pushing through the muggle fabric. As Hermione cleared her throat, the sudden sound cutting through the silence, it was enough to garner the professor's attention once more; amused yet lust darkened orbs once more meeting embarrassed teen eyes. "I should punish you, Miss Granger, for not only being out of bed past curfew but being caught in the restricted section in little more than just your under things". As she'd spoken the teacher had stalked closer to the girl, the book still held in one hand even as her voice had dropped an octave lower, infusing it with a huskiness she didn't seem aware of.

"I would take points away from Gryffindor for this, but we both know you're not the type to be bothered by that..and detentions are something you seem to enjoy with me". The flirting was obvious for a moment as the book was finally glanced at once more, a little smirk gracing Bellatrix's lips as she reached up to push the book back onto the shelf above Hermione's head, her body pushing against the nubile one in front of her. Moving her hand down again she let it linger in that untameable brown hair before drifting her fingers lower, slowly moving them so she could trace Hermione's lips with her thumb, "Unless it is a private lesson you want from me, little witch?". Her breath was ghosting across Hermione's cheek now as deliberately she bent her head to brush her lips across the teenager's.

As Hermione eagerly accepted the kiss; her lips moving against Bellatrix's then parting in invitation, a low whimpering moan was pulled from her throat. Hearing it only increased Bellatrix's need and she gripped her hand to those soft curls, yanking Hermione's head backwards to the books behind them as she plundered her mouth, her tongue slipping into the younger woman's heat and exploring it before she sucked her bottom lip into her mouth.

As they kissed, Bellatrix's long manicured fingers slipped over the back of Hermione's top, and bunching the fabric in her hand, she ripped it from the young witch. Stepping back a step she let her gaze focus on the bare breasts she'd uncovered - the soft olive skin topped by the dusty pink of her nipples - "so beautiful, little witch". Her normally cultured, polished voice so melodic in cadence was now low and seductive with lust.

Hermione's breaths laboured with her growing need, her hands fisting at her sides even as the damp patch on her knickers grew more pronounced, her scent filling the space between them. Watching the girl she hadn't failed to notice the now dark patch of red material and as she slowly sank to her knees in front of Hermione she blew a stream of air over the patch.

Flicking her eyes up to Hermione's she watched her reaction as slowly she pressed open mouthed kisses up the inside of one thigh and down the other, hissing out a breath as those pink painted nails threaded through her curls and gripped her head.

Working her fingers under the waistband of those briefs she slowly peeled them down Hermione's legs,teasing them both for a moment as she stopped to remove them one foot at a time. Her hands being free now Bellatrix moved one hand to scrape her nails down over that smooth flawless skin over her breasts and lower still to finally skim over that moist heat. Gently she rubbed circles against her puffy bundle of nerves in small, painful circles that made Hermione gasp and whimper in need, her words failing her at the sensations rocketing through her.

Bellatrix kept the pace steady and unhurried, testing her partner and tempting her, torturing her before her long fingers finally slid into Hermione's wet heat. As her fingers plunged into her core so her white teeth bit into that pulsing of life beneath Hermione's neck, her tongue soothing the bite before she suckled on the skin.

That hot breath against her skin was sending shock waves through her as she spread her legs further, inviting her professor to take more from her. Hermione's moans grew louder and more desperate as she shamelessy ground herself against those skilled fingers. When she thought Hermione was close she withdrew her fingers and trailed her tongue down over that soft enticing olive skin, blowing a breath over heated flesh even as the library filled again with more moans, this time in anticipation.

"Please, Professor..", her words were ground out as she stared at her DADA teacher. "I believe this is the lesson you were wanting from me", the professor's words were thick with lust as she spoke and a dark chuckle met Hermione's moans in the dark, "quiet, little witch, or I'll send you to bed without cumming first".

Before Hermione could blink a response those fingers were buried inside again, moving in and out, faster and harder while teeth gently nibbled at the delicate folds. Nipping again, this time she sucked those lips into her mouth before running her tongue over the moist center of Hermione's body. Breathing heavily she watched as the girl scrabbled her fingers against the shelves behind, searching for something to hold onto as slowly Bellatrix sunk her tongue into that molten heat, groaning at the taste filling her mouth.

Bellatrix feasted then, tasting her student over and over again until she could feel Hermione's body start to quake and heard those sweet moans turning more guttural and strident the closer she got. But Bellatrix swiftly removed her tongue and stepped back, her eyes almost black from desire as she swept her gaze over the keening girl, "I told you to be quiet, Miss Granger"

Using wandless magic she cast the muffiliato spell over the library before tilting her head at the unsteady girl, moving closer again to grab Hermione's waist in a chastising grip. "You never listen to me in class, always running your eyes over me and thinking of the things you wish I was doing instead. It's quite distracting you know". Her tone was playful but her hitched breaths gave away how she'd enjoyed their moment earlier.

Stepping back again until she banged against the table Bellatrix removed her skirts, revealing that she wasn't wearing underwear. Smirking now as she saw the lustful gaze drinking her in she slowly drew a finger over her own wetness, "time to put that imagination to use, little witch. I want you to use your tongue on me".

Watching as her professor sat on the table with her legs open in invitation she was propelled forward, her mind going back to that book and her thoughts during the day, enhancing the arousal coursing through her and over her thighs. By the time she'd knealt before Professor Black the throbbing in her clit had dulled into a low roar and she was able to enjoy the magnificent pussy in front of her.

Glancing up once with a slight hesitancy in her eyes Hermione brushed her fingers over the pale thighs, relishing in the taut muscles beneath the skin. Slowly she dipped her head and pressed a kiss to those glistening folds.

"I said to lick me, not kiss me, Miss Granger", the words were huffed out though the moment Hermione's tongue swept over the length of her slit Bellatrix's words were lost in a hiss of pleasure. Taking the hint she'd done it right Hermione did it again, collecting the sweet juices on her tongue and moaning lightly at the taste. As a hand tightened in her hair Hermione captured Bellatrix's clit between her teeth, flicking her tongue roughly over the nub.

Moving her tongue away, to a disgruntled grumble from above, she slid her tongue into her professor's core, revelling in the heady taste flooding her mouth. Looking up through her eyelashes she watched as Bellatrix exhaled loudly again, her head thrown back and eyes closed. Wrapping her arm around Professor Black's waist Hermione pressed her tongue deeper inside as her thumb found her clit and circled it. Moving upwards her tongue joined her thumb before she sucked the bundle of nerves into her mouth eliciting a louder more guttural cry from Bellatrix as her hips jerked against Hermione's face and a rush of wetness coated her chin.

Breathlessly Hermione let go and looked up, a smirk gracing her own lips now as she took in her professor's flushed face and the hair sticking to her forehead. Meeting Hermione's eyes she smiled at the teen, "stand up Miss Granger and lean over the desk".

Laying her upper half over the cold desk she trembled at the sudden coolness over her front, her legs parting as the Professor stroked a hand over her arse cheeks. "I don't think you've been properly chastised yet, Miss Granger". Purring out her words the Professor pulled her hand back and smacked it against the soft pale skin, smirking as the firm globe jiggled from the impact. "Being caught out of bed and in the restricted section while in just your underwear is very punishable". Each word was punctuated by another smack until Hermione gasped for air, her back arching high off the table. "Please, Professor", her tone was keening as she asked but Bellatrix ignored her and smacked her three more times before Hermione begged again, the throbbing in her pussy needing relief.

"If I'd known how such a muggle punishment affected you I'd have done this sooner", her words were barely a whisper in the dark as on the last stroke Bellatrix allowed her fingers to tease Hermione's opening before sliding two fingers into her while her free hand moved to stroke over the tender nub, the ministrations from earlier having left Hermione wanting.

"Fuck.. Professor Black.. please… fuck me..", clutching the edges of the table in a death grip Hermione trembled as her breaths turned to gasping inhales, her hips pushing back onto those fingers with every thrust. "Bossy little witch", Bellatrix's words were amused though she obliged, pressing harder against Hermione's clit as she added a third finger, pistoning her fingers into her until Hermione's body quaked and a scream filled the library.

Slowing her fingers as the aftershocks were fading Bellatrix wrapped her arm around Hermione's mid section, her lips pressing into the girl's shoulder "fifty points to Gryffindor..Hermione".