Option 3: Hermione Granger and the Prurient Professor

Hermione Granger - gifted young woman, newly discovered witch and all-around hottie - shifted her weight from foot to foot in front of the dingy-looking pub she'd been asked to meet her chaperone at. She could feel a hot ache in her nipples and pussy, pulsing an irresistible need for cocks and cum, and knew instinctively that this was the right place - although this 'Professor Potter' had yet to arrive. She was halfway through trying to remember if there was another pub in the area known as The Leaky Cauldron when the door abruptly swung open and she was yanked through by an invisible rope around her waist. She stumbled in, ignoring the sound of the door slamming shut behind her in favour of the two smoking-hot women in front of her.

They looked like the most perfectly-designed pornstars she'd ever seen; a younger woman with ink-black hair flaunting her clearly-artificial curves in a lacy black dress so sheer it was practically transparent, and an older redhead who looked like she was born to drain balls and guzzle cum in a bright red latex bodysuit with cutouts for her tits, pussy and ass. How many times had she rubbed one out to pale imitations of women like this? How could she ever go back to her magazines and movies after seeing such astounding examples of feminine lust?

“Hi there,” the older of the pair smiled, “you must be Hermione Granger. I’m Lily Potter and this is my daughter Rose; we’ll be showing you around today and helping you get your school supplies in order.” Her smile took on a sultry air as Hermione failed to muster up more than a stammered greeting in response. “Cat got your tongue? Don’t worry about it” the now-identified Professor Potter reassured her, “it’s a bit of a shock, experiencing what it means to be a witch for the first time. When did you first notice you were different to other girls?”

Hermione blushed and nibbled her bottom lip, hooking one foot behind the other and fiddling with the hem of her skirt nervously. “On my eighteenth,” she admitted, “I woke up and I just felt so horny, I haven’t been able to calm down since - and my body! It was like I’d had p- OH!” She felt a pair of large, rough hands lift the back of her skirt and pull her panties down before a cool, tingling sensation swept through her guts from her asshole to her throat and a cock almost as thick as her wrist began to pry open her virgin rosebud.

“Just relax,” Professor Potter said gently, taking hold of Hermione’s wrists and guiding her hands to the nearest source of support - the redhead herself and her enormous knockers. “It was like you’d had a whole new puberty overnight, yeah? Some first-generation witches have that happen to them, even if most just get a really intense puberty the first time. Nothing to worry about.” Hermione could only moan in agreement and thanks as she squeezed the teacher’s tits roughly, rolling her hips against the man currently filling her asshole with hot, thick cum. "And don't worry about how quickly your ass is making these boys cum, either," she continued blithely, as the man in her asshole pulled out and was replaced by another, "Rose and I have been edging them for a few hours and we promised they'd get to shoot it all into you - normally, most of them could fuck an anal virgin like you into a stupor single-handed!"

Even though they'd been primed to cum at the drop of a hat, Hermione thought dazedly, as Professor Potter slid a spit-slicked rubber buttplug into her asshole to keep the accumulated loads of a score of wizards, they still nearly beat me. Fuck, this is incredible! She moaned loudly as Rose tapped the base of the plug with her wand and the bulb nestled in her asshole swelled up to the size of her fist. "Ooh, that's nice," she murmured, feeling her hole stretch, "where to first, Professor?"

Professor Potter smiled and gave her daughter's ass a rough squeeze. "Well, I was thinking we could...

Option 1: Head to Ollivander's to get her a wand - old Garrick might not concern himself with anything but his wand-making, but his enchanted measuring tools are more than happy to pick up the slack.

Option 2: Head to Madame Malkin's, to get her properly dressed for the school year. There was a curious lack of specifics on the list of required items Hermione got, so she's curious what her uniform will be.

Option 3: Head to Gringotts to open a student account. Lily and Rose are perfectly willing to cover Hermione's costs, but she still deserves a chance to receive an, ah, 'injection of seed capital' from the Goblins.

Option 4: Something Else