AN: I don't own DM, HG, HP, RW, or anyone but JM, who isn't a very pleasant character… Enjoy.

Summary:

Jesenia Malfoy, Draco's twin sister, has just transferred from the Durmstrang Institution. She enchants every boy who meets her eye. For a reason unknown to Hermione, she had chosen Harry Potter out of all of them, and Hermione is sure she means noting good. Draco Malfoy does not know his sister's plan, but he agrees, although he still refuses to have anything to do with Hermione. In new circumstances, however, they must work together to stop her before she makes a turn the whole Wizarding community will regret… Eventually, the two realize their feelings toward one another, but what will they do about them?

Hermione Granger distrusted Draco Malfoy's twin sister from the very moment that she first saw her.

When Jesenia Malfoy entered the Great Hall of the Hogwarts School of Witchcraft and Wizardry on October 5th of Hermione's sixth year at the school, heads turned and gasps were issued. Boys forgot about the food on their plates and conversations they were having and the jokes they were telling and even the girls, who were not easily impressed, were dazzled.

She walked in arm-in-arm with her brother and announced that she was the sister of Draco Malfoy, and had recently transferred from the Durmstrang Institution because of 'private family issues'. There had also been a short explanation on why Draco had always gone to Hogwarts but nobody had heard her. Everybody's eyes were focused on her undeniable beauty.

Jesenia Malfoy was gorgeous, with her long, silky blonde hair and very feminine figure. Her lashes were long and her skin was white. Her small nose was tipped slightly upwards and her neck was elegantly long. A blush graced her cheeks. She had a certain charm as well, not lacking the familiar and recognizable Malfoy charisma. She dressed nicely, too, but did not wear the customary green and blue Slytherin House robes. Instead, she wore 1000-Galleon dresses in the same colors – short sundresses with deep V-necks – and mini-skirts with stomach-baring tank tops. Sometimes, at Professor McGonagall's request, she wore green turtlenecks or sweaters and pants or jeans.

However, her most usual garment was a lengthy black cloak which she pulled over her shoulders as she passed through the halls. A serpent was embroidered on it in green.

And there was one other thing that accompanied her always – a jewelled pendant. Emeralds studded every inch of it, forming an image of… something. Hermione could not make out what it was, although she was sure that it was a Slytherin symbol.

What worried her most, though, were the girl's piercing blue eyes. They were exactly like her brother's – chunks of cold, cold ice. Malfoys were not to be trusted, Hermione had long since learned. The fact that Jesenia was in Slytherin only proved this hypothesis, for the Sorting Hat had never yet been wrong. Hermione prided herself on knowing people, and Jesenia Malfoy set off some serious warning bells. Everything about the girl made Hermione mistrust her.

All of that, and the fact that Harry seemed entranced in Jesenia Malfoy's charm.

"Hi, Harry," she said in a honey-sweet voice that sounded like little bells tinkling as she passed the trio.

Harry, Ron, and Hermione sat at the Gryffindor table in the Great Hall eating breakfast. It was a Saturday morning and the three of them were enjoying French toast and pumpkin juice when Jesenia Malfoy, having finished her own meal, sauntered past.

Hermione frowned and Harry looked enchanted at having the pretty Slytherin girl speak to him. Ron stared after her as well, and Hermione rolled her eyes in despair.

"Don't tell me you like her, too!" she exclaimed.

"Huh? Oh – uh – no, why would I?" he answered with a pause.

Hermione groaned, slapping a hand to her forehead. It was now November, and Jesenia had been at Hogwarts for two months. The girls' awe had lessened slightly, but they still admired her greatly. The boys, however, still gaped at her whenever she passed.

"I'm going to the library," Hermione told her friends. They nodded absentmindedly, still gazing open-mouthed after the Slytherin girl. "Harry, you have Quidditch practice!" she tried. The only reaction was a small nod.

She stood, smacking the tabletop with her palm as she walked away. There was no visible response to the sound. Seeing her friends still sitting there, dazed, she sighed and made her way to the library.

As she walked along the corridor, she thought about the strange situation. What was it about that Malfoy girl? Harry and Draco had been arch-foes for years, and this girl was attracting him – and his best friend! Shouldn't he feel a little bit suspicious?

Hermione froze. Students, younger and older, brushed past her, but she did not notice. A terrible thought had sprung itself at her.

What if the Malfoys were trying to break up the friendship of Ron and Harry? It wouldn't be hard. So far, while they were reduced to simply staring after her, they could gape together. Even now, though, Ron was becoming slightly jealous that Jesenia always greeted Harry when she passed. If she asked him out –

She banished the thought and continued her journey to the library.

On the way, she saw Jesenia smiling at herself in the mirror. The sixteen-year-old was wearing a skin-tight outfit that consisted of a dark-green mini, a tank top, and a pair of knee-high boots. She wore her Slytherin pendant, but her cloak was missing. With one last look at herself, she turned and walked towards the tower where the Gryffindor common room was located.

Suspicious, Hermione trailed behind the girl, pretending she was simply going to her dorm room. It seemed to work, and she relaxed.

Jesenia hurried up the hall, looking as if she was searching for someone. In minutes, she spotted him.

The tall boy had untidy black hair and a wide stride. He was wearing his red Gryffindor Quidditch robes, the word 'Seeker' written in gold on the back. Hermione knew him right away, and her lips pursed. She had to force herself not to call out to her friend as she slowed her pace and then stopped completely to watch the show. A bad feeling crept into heart.

"Oh, Harry!" Jesenia called sweetly.

Harry stopped in his tracks, and turned around slowly, struggling not to look too cheerful. "Oh. Hello, umm…?"

Hermione made herself not barf and stepped into the shadow so that neither sixth-year would see her. She knew perfectly well that Harry knew Jesenia's name but was trying to sound mature and careless, pretending he had forgotten the Slytherin's name.

Jesenia laughed, her voice high-pitched and girly. "Silly me, you're right. We were never introduced! I'm Jesenia Malfoy."

"I'm Harry," the Gryffindor said, smiling happily. "Harry Potter. Nice meeting you, Jesenia."

"Call me Jess," Malfoy's sister said.

"Okay… Jess," Harry said. Hermione thought he sounded like an idiot. A drunken idiot. "So… why are you…?"

"I wanted to apologize for everything my brother did to you," Jesenia said. "Perhaps a walk to Hogsmeade with me would make up for it?"

"Perhaps," Harry replied, still trying to sound cool. Jesenia smiled at him, flipping her blonde hair back over her shoulder, and fluttered her long eyelashes prettily. Hermione groaned. She had hoped Harry would be smart enough not to fall for the Slytherin girl. She had overestimated him.

She took off for the library.

Once there, she engrossed herself in a brand-new edition of 'Hogwarts: A History', trying to forget about the possibility of a rivalry between her two best friends. Her head had begun to hurt, and the soothing silence of the library calmed her and let her think. But instead of thinking of about Jesenia, she focused on reading the new and updated version of 'Hogwarts: A History'.

There she sat for two hours straight, studying the book until she learned its contents by heart. By the time she finished, she could quote numerous pages from the book from memory. With a smile she put it aside to see a girl in a green mini standing before her.

"Jesenia Malfoy," she said, her smile fading.

"Hermione Granger," the Slytherin girl replied.

"What do you want, Malfoy?" Hermione asked wearily.

"Call me Jess."

"No, thanks… Jesenia."

Jesenia raised her brows. "The Mudblood has backbone… and an attitude."

Hermione almost felt pleased at the comment, until the girl added dangerously, "I hate attitude."

She leaned forward, making Hermione push her chair back on two legs. "Listen, Mudblood. If you get between me and Potter, you will pay. Clear?"

Hermione was on the verge of saying 'clear as mud', but instead pushed the taller girl away. "Harry's my friend. I won't let you hurt him."

"Why would I want to hurt him?" Jesenia smiled wickedly. "I'm going out with him."

"Why?" Hermione bit out.

"Because it's fun," the girl answered calmly. "Why else?"

"Does your brother know you're dating his arch-foe?" Hermione asked viciously. Jesenia paled slightly.

"Of course," she said quickly. Wanting to have the last word, she swirled on her heel and walked away.

Hermione smirked. "Of course," she called quietly after the Slytherin.

Then she rose from the chair and went to find Draco Malfoy.

AN: What will Draco say? Should I continue? Review or JM will dump Harry!