Experts Only

This story takes place during Hermione’s stay at Hogwarts. It’s some time after year four, but the year’s not that important.
~~

The Fat Lady’s portrait swung open. Hermione rushed into the doorway and past the Gryffindor common room, thanking the stars that no one she knew was in there. Racing up the stairs to the girl’s dormitory, she was carried a large, black leather-bound book, holding it in a way so that no one could see it. She found it in the restricted section of the school library and while she wasn’t necessarily afraid of getting into trouble for being there, the questions that would arise from her friends would be too embarrassing to deal with. What reason did she have for even being in the restricted section? Truth be told, she was in it to find that exact book, but she wouldn’t have told a soul. She would have lied and say she was researching advanced spells against the dark arts or something.

She opened the door to the dormitory and her heart raced at her good fortune: it was completely empty. She assumed that she would have to make excuses to get her roommates to leave. But since she was alone, she simply magically locked the door behind her with a spell she knew was upper-N.E.W.T. level so as to discourage any intruders of un-jinxing it. Laying the book in front of her, she climbed into bed, propping her head against a pillow. She gazed at the cover as if it was a prized treasure. In golden letters that seemed to glow it said, "Pleasuring Charms and Sexual Spells: The Amorous Witch’s Guide To Self-Satisfaction."

She wasn’t uneducated in the subject of sex. She had read about it even before she came to Hogwarts, and had made out a little with Krum so she at least had some real-world experience about “first base”. But lately, she had been craving… something.

She masturbated all the time; in the shower and under her covers at night. She even purchased a Muggle dildo that vibrated over her summer break, but it wasn’t enough. Her mind said she wasn’t ready for sex but her libido said otherwise. Over the last few months, she read up on if there was a way to either magically tone down her sex drive or quench her sexual thirst.

She was surprised to find quite a few spells, potions and devices all designed to ease her horniness and the information on them was well within her grasp. There was a certain root whose nectar could make a woman forget what sex was and instead get pleasure from things like doing hard work and being honest. A potion that she read about could actually halt the production of testosterone, the primary source of arousal and promised no long-term side effects. There was also a spell that was used during the middle ages for married women that made them so loyal to their husbands that simply being next to them was enough.

But they weren’t what Hermione wanted.

After weeks of putting it off (she had half-heartedly decided on the root nectar), she realized that she would much rather attempt to curb her gigantic libido.

Unfortunately, while a there were spells to make masturbation a little more fun, they all used methods she could get from Muggle devices. No, she needed something a lot more intense. It took a few weeks, but she eventually found out about the book by way of bathroom graffiti. The defacing words said, “Looking for a good time? Try ‘sexual spells’ in the library.” She laughed to herself as the image of Moaning Myrtle writing the message popped into her head. She had heard that the ghost was quite interested in Harry when he took that bath in the fourth year…

Opening the book to the first page, she read:

"A warning to those who seek sexual fulfillment—
These spells are not for the faint of heart, or the weak of womb. They are for experts in the sexual arts, a magic all its own. If you stray too far into uncharted territories, remember that each one of these spells will wear off if one or more requirements are met:

1. A true sexual desire is born
2. Your sexual thirst is quenched
3. The fainting or passing out of the subject

With love,"

Hermione couldn’t make out the name, but she took the advice very seriously. She was almost certain that she already met the first requirement, and the whole reason she was doing this was for the second. Worst case scenario was fainting but, with her heart racing, she decided that it was worth it.

Turning the page she saw the first chapter and frowned. "Finding the clitoris." She knew where her clitoris was; she had found it months ago. She turned to the next chapter and frowned again. "The joy of penetration." This, too, she was well versed in. Becoming frustrated, she flipped to the last chapter in the book. "The one-woman gang bang."

“Now we’re talking,” she whispered excitedly. She continued to read,

"After the joy of anal penetration and the wonders of semen have been discovered (see chapters 12 and 19, respectively), we are now ready to try the best sexual spell ever conceived, in this writer’s humble opinion. It requires a true desire of the outcome, before anything else. Much like the strongest spells of our time, the user must want it. Please take this into consideration and practice concentrating on this concept before continuing."

“That won’t be a problem,” she said aloud.

"Once dedication has been reached, the only thing remaining is the incantation: Omnious Penetratious. Remember to mean it. Good luck."

Hermione could already feel her panties becoming damp beneath her robes. She slowly picked up her wand and, her hand shaking, whispered, “Omnious Penetratious!”

An invisible force seemed to push her on her back, flinging the book off her bed and skidding across the floor. Feeling as though she was being pinned down by her shoulders, she glanced at the book on the floor. Suddenly, she realized her robes were being torn down the middle.

With a loud “RIIIIP”, the front of her clothes along with her bra and panties were torn in two and slid off of her completely. Before she could react to this new turn of events, she gasped loudly as she felt something warm, thick and hard slide into her now dripping womanhood.

She craned her head as best she could over her exposed breasts, but she saw no intruder penetrating her. It felt like a real penis, but it was completely invisible. As it began to slide in and out, slowly increasing speed, she blushed furiously at the though of what it must look like to have her vagina expand and contract magically.

She was on the verge of her first orgasm of the night when she felt another intruder. Craning her neck again in vain, she could feel a second, well-lubed penis slide into her virgin asshole. Her orgasm was cut off as she gritted her teeth.

She now knew why chapter 12 was so important.

Her wand still in her right hand, she raised it. She attempted a counter-charm before it rocketed out of her hand. Hermione looked over and saw to her horror her hand forcibly clasped around another invisible penis. She could feel it sliding in and out of her strangely well-lubed and, now wand-less, hand. As she tried to open her hand, she grunted as the intruder in her ass sped up and an unexpected jet of vaginal fluid shot from her pussy. Turning a much deeper shade of red, she glanced back over to the floor where the book was and saw that her wand was lying on top of it. Another penis forced her to wrap her left hand around it and despite the pleasure she was beginning to feel, she felt helpless without her wand.

“HEL—“ her cry for help was cut off by the cramming of a fifth phantom dick in her mouth, forcing her to swallow what must have been seven inches. She could feel the invisible balls slapping against her chin and, despite the unwillingness to accept assault on her holes, she moaned as she felt another orgasm coming.

She had never in her wildest dreams thought she’d ever be into anal. But sure enough, her C cup breasts began to rise and fall with pleasure as both her holes were being pounded. With a muffled yelp, she felt the penis in her ass fire what seemed like bucket loads of semen. With a disgusted face, she once again craned her neck in a useless attempt to see what was going on below. At least that one’s done, she thought.

No sooner had the relief passed through her mind did she feel another, seemingly thicker dick slide into her semen-dipping asshole. Her eyes became wide as she moaned even louder at the new intruder.

She didn’t care how good this felt, it was too dangerous to go wand-less. Trying once again to get up, to her surprise she was able to. Rising to a sitting position, the force of the two cocks in her holes made her bounce on the bed. Fighting the force of it, she pulled her legs to the side of her bed, and stood up, bending her legs in a feeble “gotta pee” position. She whimpered as the cum from her ass dripped to the floor and flushed red as she shot another stream of vaginal fluid. Tears of mixed ecstasy and embarrassment streamed down her face as she slowly and methodically, step after step, made her way to the book lying on the floor across the room.

Halfway to her destination, she let out a muffled scream of pleasure. She felt hot semen shoot up inside her womb, followed by another jet of cum in her ass. With a wet squelching noise, the two intruders slid out and she desperately tried to hold in the cum to avoid any more mess on the floor. Beginning her trek again, she moaned loudly and fell to her knees. Feeling another set of cocks assault her already sore holes, she came again, creating a large puddle on the floor.

She continued toward the book, awkwardly crawling with her hands still forced to grasp sliding cocks. With a choked cough, she felt another spurt of cum; this time down her throat. She waited for the cock to slide out so she could spit the jizz on the floor. To her horror, she understood that it would not leave until she swallowed it all. Wrinkling her nose, she gulped down the entire load and the invisible dick left her mouth.

“HEL—“

Once again, she was cut off. Grunting in anger, she started to crawl again. She felt another load shot into her cunt, but she was a little more used to it at this point. Even so, it caused her to have another unwanted orgasm, and she shuddered as once again the dick was replaced.

Determined to rid herself of these phantom cocks, she pressed on. Her own cum mixed with the cum of the cocks and slid down her thighs, soaking the floor.

Finally, she reached her wand which sat on top of the book. Using both hands as if she had a pair of hooves, she slowly tried to lift it between her knuckles. This was hard as the hand-cocks continued their assault, beginning to speed up. Just as she got a decent grip, a stream of cum shot from what looked like inside her hands, and covered them in hot semen. Unlike the other dicks, these simply began to slide in and out again without replacing themselves.

She tried to lift her wand again between her “busy” hands, but it was no use. The slimy cum had made it far too slippery. Moaning in a mix of unwanted pleasure and frustration, she lay on the floor next to the book and understood what it meant by “experts.” She knew she either had to have the biggest orgasm of her life, or pass out. At this point, she figured one would certainly lead to the other, which was probably the point.

She rolled onto her back, lying spread eagle and closed her eyes, trying to concentrate on the admittedly wonderful feeling of being filled so tightly and completely. She moaned loudly as her ass and cunt were filled with more delicious semen and smiled widely as she realized that the cocks just continued to pound into her, giving up on replacing themselves.

Another jet of cum shot down her throat. She let out a muffled giggle as she realized that she loved the taste of it. Swallowing every last drop, her stomach growled for more. In compliance, the cock began to slide in and out again and she happily deep throated what seemed like an even longer dick.

Faintly in the back of her mind, she tried to tell herself that she was becoming something she’s not. But she ignored that advice; this felt too good to fight. Two more streams of cum shot out of her hands, covering her tits and sending her into yet another wet orgasm. Immediately after that, another load shot into her cunt, prolonging her pleasure and sending another stream of vaginal fluid across the room.

Another muffled giggle signaled the addition of two more cocks, each rubbing against her cum-soaked tits. As more cum shot into her starving throat and four streams shot onto her tits and the rest of her body, she felt herself climbing higher and higher into sexual bliss. If she were to die right now, she wouldn’t care. More cocks seemed to appear, rubbing all over her body, shooting their loads at random times. She gulped down buckets of jizz, moaning as her ass and cunt leaked man sauce, unable to contain any more but ready for another round.

As she felt herself almost at the top of what was easily the biggest orgasm of her entire life, stars began to form in her eyes and light seemed to emanate from every part of her sweat-soaked, naked body. All at once, every cock shot the biggest load of the night and she drank hungrily from every hole as her peak was reached.

The spell slowly wore off and she laughed quietly as she felt cum leak out of her cunt and ass, despite her desperate efforts to contain it. She was soaked in sweat and jizz and she loved it. As she drifted off to sleep, she smiled and realized that all three requirements were completely met. She was a different girl now, and she loved what she had become.