Tonks gets answers.

Hermione was sitting in an empty library, quietly browsing through a huge stack of books about magical history, when Tonks kicked the door open. Hermione looked up, startled. The pink-haired witch was wearing nothing but a too-small Hogwarts blazer, not quite long enough to cover her pink-haired pussy, and pulling it down with one hand while she brandished her wand in the other. She was soaking wet, and very unhappy.

"This is a library," Hermione said, reproachfully. "You're supposed to be quiet."

Tonks flicked her wand. An invisible hand took hold of Hermione's chin, forcing her to stand up on her toes and tip her head back. Her book fell out of her hand, onto the floor. "Hey! I was reading that!"

"What the hell just happened?"

"How should I know?"

"I've just had the most embarrassing experience of my life," Tonks said, through gritted teeth. "I just took all my clothes off and did something very private in front of a hundred people. Then I went and jumped in the lake. Did you know there's a giant squid in the lake? Did you know it's very curious? I certainly do. And so do all the people who stood on the shore, watching it play with me and taking pictures. I'm not very happy, Granger."

"That sounds dreadful. But what does it have to do with me?"

"The whole time," said Tonks, "I was shouting at the top of my lungs that I was Hermione Granger and I was a little slut who needed to be punished."

"That's ridiculous. I'm not a little slut and I don't need to be punished."

Tonks flicked her wand again. Hermione's skirt was yanked down around her thighs, exposing her bright red Gryffindor panties. She squawked and struggled, but she couldn't move. Tonks' magic was pinning her arms to her sides and making her stand to attention, helpless to resist. "Stop it! Let me go!"

"What do you know?"

"I don't know anything! I swear!"

"That's unlucky," said Tonks, grinning. "See, I need to take all this anger out on somebody. If you can't help me I guess it might as well be you." She twirled the wand, and Hermione's panties began to slowly descend. "Hope you like having all your pretty little chestnut hairs plucked out one by one."

"What? No no no..."

Hermione bit her lip as Tonks gazed, smirking, at her naked pussy, and she felt invisible fingers began to trail through her pubic hair. She screwed her eyes tightly shut as they tugged gently at her hair, before selecting one strand and beginning to pull. "Eek! Eeeek! Ow ow ow!"

"Did this to Bellatrix Lestrange once. She didn't like it either."

"Stop! I'm innocent!"

"Too bad. You're going into the lake, then."

"Ow!"

"Er," said Ginny, stepping out from behind a bookshelf. "I might have some ideas."

"What? Who are you? What are you doing here?"

"Don't look at me! Ow!"

Ginny held up a book called 1001 Wizard Practical Jokes.

"I'm doing research," she said. "I got pranked yesterday, just like you did."

"Someone controlled your mind and made you take your clothes off?"

"Right here in the library. I had to run back to the dorms naked, and the Fat Lady wouldn't let me in until I sang her a song."

"Sounds embarrassing."

"It was. And I think I know who's behind it."

"Who?"

"I can't tell you yet."

Tonks' eyes narrowed. Ginny took a step back. Hermione squirmed and struggled, still having her hairs very slowly plucked out. "Just tell her! Please!"

"I need more time. But I promise you we're going to get ****."

Tonks scowled, and raised her wand. Ginny nervously reached for hers, and Tonks sent it flying out of her hand with a simple gesture. Ginny gasped and raised her hands, preparing to fight, but Tonks simply smiled and pulled her blazer down further.

"Alright," she said. "I believe you."

"You do?"

"Sure. But just so you know I'm serious..."

She performed a series of very rapid gestures with her wand, with the effect that all Ginny's and Hermione's clothes exploded into little pieces and flew out the window. The two nude witches were hurled towards each other, **** into an intimate clinch that pressed their breasts together and **** their lips to lock. They stared into each other's panicked eyes, feeling the warmth of each other's skin and the heat of each other's tongues, as their noses rubbed together and their hands clutched each other's nubile buttocks. Tonks grinned.

"You two can stay here, kissing each other, until exactly ten minutes after the first person walks in and finds you," she said. "And then you can run home nude."

"Mmph!"

"Mmmph!"

"Consider it a little taste of what's going to happen if I don't get my **** in, let's say, three days. You know we have special magic prisons for very naughty witches who need to be punished? With feathers, and paddles, and tentacles, and lots of people there to watch..."

"Mmph..."

"Sounds pretty embarrassing, doesn't it? So you'd better find out who pranked me, or nude makeouts with your friends will be the least of your worries. Anyway, I'll leave you to it. I have to..." Tonks' smile faded as she looked down at herself, still completely pantsless, and remembered that she'd just thrown the only clothes in the room out the window.

"Have to walk back to my office," she muttered. "With that bloody journalist still out looking for me. You know what? Better make it twenty minutes."