It was just another ordinary day at Hogwarts School of Witchcraft and Wizardry for Hermione Granger, but little did she know that today was going to be the day she took her revenge on Draco Malfoy. She was wandering through the halls, lost in thought, when she stumbled upon an old, dusty book in the library.

"What's this?" Hermione muttered to herself as she picked up the book and flipped through the pages.

She soon realized that it was a spellbook containing a spell that could shrink people down to incredibly small sizes.

"This is it," she thought to herself, "the perfect opportunity to get back at Draco for all the times he's made my life difficult."

One afternoon, when Draco was wandering alone in the Forbidden Forest, Hermione cast the spell on him. In an instant, Draco was shrunk down to just one inch tall.

"What the hell!" yelled Draco as he looked at his tiny body.

"Gotcha!" Hermione grinned as she snatched him up and put him in her pocket.

Once in the Gryffindor girls' dormitory, Hermione showed the other girls Draco, who was now no bigger than a small toy.

"Look what I can do!" Hermione exclaimed with excitement.

"Wow, that's amazing!" said one of the girls.

"We should definitely try it out on someone," said another.

Hermione then suggested that they pretend to be evil by putting Draco on a stool, and one by one, they sat down on Draco and then farted on him.

"No, please stop!" Draco begged as he squirmed and squealed beneath them.

Despite the cruel nature of the prank, Hermione couldn't help but feel a sense of satisfaction at having finally gotten revenge on Draco.

"You deserved it," Hermione said with a smirk.

As the girls, Susan, Lavender and Parvati, sat on him one by one, Draco's tiny body was squished and squashed under their weight. His screams of protest were muffled by the sound of the girls' laughter and the loud farts they let out on him.

"Come on girls, give him a taste of our ass" Hermione laughed as they continued the prank.

He squirmed and wriggled, trying to escape, but it was no use. He was trapped, and there was nothing he could do to stop them.

"Oh, come on, it's just a bit of fun" Susan said as she let out a fart on Draco.

"Yeah, don't be such a baby" Lavender added as she sat on him.

"It's your turn, Parvati" Hermione said with a smirk.

Parvati sat on him and let out a fart, causing Draco to scream in disgust.

Hermione couldn't help but laugh at the sight of Draco, her once arrogant and powerful enemy, reduced to nothing more than a tiny, helpless figure at the mercy of a group of teenage girls. She couldn't help but feel a sense of power and superiority as she watched him squirming under the weight of their butts, feeling the vibrations and the smell of their farts.

As the girls finally got up, leaving Draco bruised and humiliated, Hermione couldn't help but feel a sense of accomplishment. She had outsmarted him, and had shown him that she was not to be underestimated. From that day on, Draco thought twice before messing with Hermione again. He knew that she was capable of much more than he had ever imagined and that he should never underestimate her again.

And as for Hermione, she couldn't help but feel proud of herself, a devious smirk appearing on her face.

"Please, just let me go," Draco begged, his voice trembling with fear.

"I'm not sure," Hermione said, a hint of amusement in her voice. "You've caused me a lot of trouble in the past, Draco. I think it's only fair that you suffer a little bit too."

The other girls, Susan, Lavender and Parvati, looked on with interest, waiting to see what Hermione would do next.

"We could keep him as a pet," Susan suggested with a chuckle.

"Or use him as a living chess piece," Lavender added, also laughing.

"I have a better idea," Hermione said, her eyes lighting up with excitement. "We'll use him as a decoration. We'll put him in a little glass jar and keep him on our bookshelf. He'll be a constant reminder of the power we hold over him."

The girls nodded in agreement, and Hermione carefully placed Draco in a glass jar, which she then placed on their bookshelf.

Draco was trapped, and there was nothing he could do to stop them. He was a prisoner in his own tiny body, at the mercy of these teenage girls who held all the power.

Hermione and her friends laughed and joked as they walked away, leaving Draco alone in his jar, staring out at the world that was now so far out of his reach. He realized that he had been foolish to ever underestimate Hermione Granger, and that he would never make that mistake again.

From that day on, Draco Malfoy knew that he had met his match in Hermione Granger, a true Giantess who held all the power. And as for Hermione, she couldn't help but feel a sense of satisfaction as she looked at her tiny prisoner, knowing that she had truly come into her own as a powerful and confident witch. She had stood up for herself and had shown that she would not be pushed around by anyone, not even Draco Malfoy.

The girls continued to use Draco as a decoration and would often take him out and play with him, but Hermione never forgot the lesson she had learned that day. She knew that she should always be aware of her own power and that she should never underestimate herself or others.

As for Draco, he was eventually freed by his friends and returned to his normal size, but he never forgot the humiliation he had suffered at the hands of Hermione and her friends. He knew that he had been wrong to underestimate Hermione and that he should never have underestimated the power of a true Giantess.

The incident served as a reminder to all the students at Hogwarts that Hermione Granger was not to be underestimated, and that she was truly a force to be reckoned with. And as for Hermione, she continued to grow in power and confidence, knowing that she had truly become a Giantess in every sense of the word.