One month had passed since Andromeda had first felt the magical, in more than one sense, tongue of Harry Potter on her folds and she had been avidly cultivating their relationship since then. Having the boy service, her had become an almost daily thing for her, yet much to her surprise she realized this wasn't nearly enough for her.
Her sexual drive had been repressed for much of her life and kinks and fantasies had always been stopped in their tracks, yet now she suddenly had a willing outlet for all her frustrations, one that she also needed to bring under her control.
Simply threatening to go to Mrs. Dursley was a weak threat, where as it might have scared the Potter child, it was respect given to the Dursley woman, not her. That had changed a week ago as the Potter child had called her 'Miss Brown' instead of the new moniker she insisted he used whenever they were in private, Mistress. The use of the new title was calculated, it was to separate her from other women and make the boy treat her as a seat of power unique to him.
Harry had realized his mistake the moment the words left his mouth, it was only the two of them in the classroom, he should have called her Mistress, she had been very clear about the use of the new title. He saw her eyes flash to him and to his surprise he thought he saw…glee?
He was about to open his mouth to apologize when she held her hand in a universal sign for silence. Harry watched as she calmly sat down in her chair and carefully pulled up her skirt to her waist. He thought she expected service again yet she said it was to 'avoid wrinkles'.
"Take off your clothes now." She snapped out.
Harry obeyed immediately, this was not the first time he had heard the command, simply the first time Miss Br…no, Mistress Brown had used it.
"Lay down in my lap." She added as soon as he was done, indicating her smooth thighs, enclosed in the usual white thigh high stockings she seemed to love.
Harry did as he was told, actually quite liking the feel of the silky stockings rubbing against his skin as he leaned over her long legs. He felt a firm smooth hand rest on his back as another one started rubbing his buttocks.
He soon heard her breathy voice, she surprisingly sounded as she did when he pleased her, even though he hadn't done anything to her yet!
"Well now Mister Potter, it would seem you don't feel it necessary to obey my orders."
Harry tried to speak; to convince her that this wasn't the case when he was cut off by the sound of a loud slap and a fierce stinging pain in one of his cheeks. He moaned in pain and soon felt the same smooth hand rubbing the red cheek.
"You will not interrupt your Mistress at any time Mister Potter, should you forget this you will quickly be reminded." Her voice sounded even huskier than before.
Harry quickly nodded, not daring to open his mouth again.
"As I was saying, you seem to feel free to ignore my commands, barge into my room uninvited and in general behave as you please, with no heed to your superiors."
Andromeda paused briefly to see if the boy would open his mouth to object but he seemed to have learnt his lesson and stayed quiet this time. She tried to ignore the way her pussy was moistening at her actions; she never knew dominating someone like this could feel so…good.
She smirked; it was not like she wouldn't be able to have her pussy dealt with later, thanks to boy in her lap. She made a sound of agreement at his silence and continued,
"As such I have decided it is time for me to teach you your place in this classroom, these spankings will become a common thing any time you step out of line."
She felt the boy tense in her lap; yes, these lessons would go a long way to her getting the respect she wanted.
"You will count the blows and thank me for teaching you this valuable lesson after every blow."
She followed up her statement with a strong slap to his other butt-cheek and waited. Her smile grew wide and her pussy started dripping when she heard him reply with;
"T-two, thank you, Mistress."
The total dominance she had over the boy felt intoxicating as she started raining down blows on his cheeks, alternating between left and right, waiting patiently for him to catch his breath to thank her after every single one.
Harry couldn't believe the pain he was in, his entire rear end felt like it was on fire; Mistress Brown's hands were clearly far stronger than they looked as they easily held his flailing body down while smacking his rump.
He barely even realized he had even started thinking of her as 'Mistress' Brown now, not wishing to do anything to ever receive this punishment again. He desperately hugged her silky stocking clad legs as he stuttered out the numbers she demanded.
Andromeda drew a shuddering breath as he heard him thank her for the twentieth blow, her nipples were hard as glass, poking through her blouse and she was certain the chair underneath her had a wet spot where she sat. Her entire right hand tingled from the smacks yet the sensation was not unpleasant at all.
"Serve me, now!" She bit out through clenched teeth, pleased to hear a muffled "Yes Mistress" before he pulled off her soaked panties and buried his face in her crotch. Not bothering with any finesse, she placed her thighs on his shoulders and buried both her hands in his hair; pulling him close as she grinded her wet needy pussy into his face.
Harry gasped desperate breaths as he tried to lick and swallow everything being forced into his mouth, his Mistress was clearly extremely excited as she paid no heed to his need to breathe, flooding his mouth and demanding he use his tongue more.
Harry did as order; the unexpected spanking had made him realize that regardless of the vastly different looks, his Mistress was no more forgiving of rule breaking than his Aunt.
Feeling Mistress Browns' legs quiver and lock behind his back he took a big preparatory gulp of breath as his nose was once again ground into her clit, he desperately locked his lips around it, sucking and licking as he heard her moan loudly.
Andromeda moaned loudly as the best orgasm she had ever experienced hit her hard, loving the look of subservience in the eyes of the boy as his wet tongue danced all over her hairless slit. She shuddered as he felt him obediently scoop up her fluids with his tongue, swallowing everything without hesitance.
The pressure on her bladder was going to force her to move soon, yet her legs felt like jelly and she didn't feel like moving away from the lovely mouth sucking her pussy lips into his mouth, cleaning her with practiced moves.
That was when she remembered his offer from a few weeks back, 'If you need a toilet, I am also available Miss Brown.' Feeling an undeniable spark of excitement, she looked down at the lapping boy, sensually whispering out the words,
"I need to pee."
His eyes briefly snapped to hers before she saw him spread her pussy with his fingers, moving closer and tightly wrapping his lips around her urethra. She saw his cheeks become hollow as he started applying light suction, making an airtight seal around her opening.
She flushed in pleasure and slowly let her pee trickle into his willing mouth, watching intently as he gulped down her piss like it was a precious gift. The act of subservience and the sense of power she got from the simple action was incredible, especially as she saw that he had not spilled a single drop, even going as far as cleaning her again with his tongue when she was done.
Harry gulped deeply, swallowing down the warm fluid his Mistress had given him, feeling it flow down to his stomach, heating up his belly. He looked into her eyes as he started cleaning her, like he usually cleaned his Aunt, and saw a relieved smile grace her lips while a strange fervor burned in her eyes.
That had been a week ago, yet Andromeda had made sure to spank Harry two more times during the last week. 'To make sure the lesson stuck' she had claimed, making no mention of how incredibly turned on she was afterwards.
Andromeda had been starting to realize she was a good bit kinkier than she expected, starting to let all her fantasies roam free. This was proving to be a very informational school year for both the former Black sister and the future Lord Black.