Chapter 1:

"Hermione, would you come down stairs for a moment love?" called Jean Granger.

"Coming Mum," a fifteen-year-old Hermione Granger replied as she bounded down the stairs and into their kitchen/dining area. It was the summer holidays and Hermione was approaching her 6th year in Hogwarts. Her birthday was to be on the 19th of September when she would be turning sixteen.

"Listen sweetie, there's something me and your Father need to explain to you, but first, remember we always have and always will love you," her Mother looked at her sadly. Hermione got a bit worried, her Mother was never sad. She was the constant sunshine in her life. "Well, on your 16th birthday, your appearance will change and you will come into a extremely rare form of inheritance. You have a twin, all we know is that it's a he, and he goes to Hogwarts with you. This means you will already know him. You come from a family of purebloods. We have met quite recently with your biological Mother, and if it is okay with you, she would like you to move into their Manor with them. They are coming in an hour or so to speak with you. Your birthday as you know it is a pretend date. We altered it so if you met your twin at school and noticed the same birth date, you wouldn't figure out the possibility of having a twin if you found him. You will actually turn 16 tomorrow..."

"Oh, erm... okay," Hermione trailed off nervously, she wondered why they hadn't mentioned any of this before. A sudden flare of anger burst from her, "Thanks for finally letting me know then! Don't speak to me at the moment. Call me when my real family get here!" Hermione fled with tears falling freely down her face. Jean had dissolved into silent sobs while her husband, Charlie, went to comfort her. He knew now might not be the best time for it when their little girl was going away for school again, but it was now or nothing.

Once in her room, Hermione wiped her tears away and began to focus on her new family. She wanted to pack so she could leave right away. She was annoyed with her 'fake' parents, and though they had created a happy environment for her to grow up in, she always felt they didn't always want her around. Now she knew why. She continued to pack; angrily stuffing clothes and possessions into her trunk. She didn't want to admit it, but it did make sense. She excelled a lot more than any other muggleborns. She wanted to know who her mystery family was.

"Hermione?" she heard Jean call timidly, "they're here!"

Not bothering to reply, Hermione grabbed her trunk before casting one more look around her old room and turning down the stairs for what she hoped to be the last time.

"Hello," a gentle voice made her jump. She turned to see the most beautiful woman, ever, before her. "I believe an explanation is in order, I am Christina Zabini, I am a single mother to you and Blaise, I am sorry for abandoning you as a baby, but it was for the best. You will learn to see why in time. Tomorrow your glamour charm will be lifted to resume your regular appearance. My son, your twin, is outside. He wanted to wait until you knew more for you to understand and except him easier. Your birthday is tomorrow and you will both become Potestatem. I doubt you will have heard of them. They are a semi-human, semi-magical race of beings. Very rare, very powerful and very well liked. You will come into you inheritance tomorrow along with Blaise. He is now on his way in,"

On cue, Blaise Zabini walked into the Granger's living room, with a trademark smirk on his face. "Hermione." he held his hand out.

"Blaise." she copied. He pulled her into a hug before the handshake was over and whispered comfortingly in her ear, "Don't worry for now, we can talk later,"

Ms. Zabini, not noticing this carried on, "Excellent, we shall be on our way now, anything you want to say to the Granger's before we leave?"

"No thank you, I think we're done here," was her cold response.

"Very well, thank you for taking care of her, I appreciate it, kids, let's be going!" Ms. Zabini moved gracefully out of the room to the front of the house with her children following behind her. She motioned for them to take a hand each for her to apperate them home.

Hermione frowned sadly at her once upon a time parents, and mentally prepared herself for the suffocating darkness known as apperation. Both her and Blaise staggered slightly from the sharp landing. Christina meanwhile, was making her way towards huge pair of iron gates. She opened them with a series of spells and beckoned her kids to follow her. They did, and walked up to the Zabini Manor.

"Blaise, show Hermione to her room and help her choose an outfit for the party tonight, explain what is to happen at midnight too please," She asked her son.

"Okay Mum, come on Mya!" he called as he quickened his pace towards the house with obvious excitement.

Hermione nearly had to run to keep up with him. "Mya?" she questioned as he slowed to walk with her.

"That's what mum used to call you when she talked about you, I always knew I had a twin, just not who… although it being you isn't a bad thing. You may have noticed I was never rude to you or your friends directly, and we are some of the few ancient pureblood families that aren't against muggleborns. But I can't wait to see Draco's face when he realises he can't call you that awful name anymore," Blaise explained.

"So what's happening at midnight?"

"Well, because it will be our birthday, and we will come into our inheritance tomorrow, at around 10 to 12 we will both leave the party and go into one of the guest rooms. We will go there until we have changed properly. Depending on how tired it makes us, we will either return to the party or stay there to sleep. There hasn't been a Potestatem for millions of years; apparently we had a dormant gene that isn't so dormant for us! Also, fair warning: I have a friend over for the rest of the holidays, be nice? Promise?" he asked pleadingly.

Hermione couldn't say no, "Alright; who is it?"

"Draco," He winced as he said it.

"Seriously?" she whined.

"Don't whine, it's not how a proper lady acts," he mock reprimanded, winking, "and he's not that bad! When he isn't putting on his act he's alright. You guys have known each other as long as I have known him! We all used to be pretty close. Everyone always joked you guys would end up together,"

"Urgh, okay. I'll be good, but he better be too," she concluded.

Blaise started to laugh, then grudgingly so did Hermione. Laughing together they entered the Manor. "Wow!" she breathed as she caught her first sight of her new home.

"I know," He laughed again. He took her hand and dragged her out of the grand hallway and up the first flight of stairs. They came to a long landing with another set of stairs at the end. He pulled her along and they began to ascend those stairs too. Once at the top she saw 2 doors opposite each other. One had the name plate 'Blaise' the other said 'Mya'. He walked her over to her door and gently pushed it open. Inside was a pale lilac and white room full of furniture of a pale wood. There was a huge king sized with a lilac coloured cover and fluffy white pillows. The walls were a lighter shade of lilac with a white ceiling. There was another door to the left which was white and one on the right, also white. One said 'Bathroom' on it and the other said 'Closet'.

"You like it? Mother and I designed it the other day," He asked her curiously.

"Yeah, it's amazing! Thank you so much," she said leaping to him and hugging him fiercely.

"You're welcome," he said, kissing her hair, "Let's find some clothes for tonight?" They entered the closet that was the size of the entire ground floor at Hermione's old house. It was fully stocked for all seasons and occasions.

"What do I need then?" she asked her (slightly older) brother, lost.

"Well it's a pool party so you'll need a bikini, a tank top, a light skirt and flip flops!" he said as if it was basic knowledge.

"Right… okay." She said still not making a move any closer to any of the clothes. He laughed briefly before moving forward and eyeing some of the items.

"Go relax on your bed for a minute. The make-up artist will be up soon. I'll deal with your clothes don't worry," he told her.

"Thanks Blaise! What about Malfoy? I thought he was here?" she asked confused.

"Oh yeah, I'll call him up in a minute!" he replied now rummaging in some draws. Once Hermione had left the closet and went to lie down for a while, he called his house elf, "Bagpa!" With a crack he appeared.

"What would you like Master Blaise?" he asked.

"Could you tell Draco to come up here in a few minutes please?" he asked the elf gently.

"Of course sir," he squeaked before leaving with another crack. Blaise found the last of the required clothing for his sister before re-entering her room and handing her the items.

"Go change in the bathroom, I'll wait here. Put on the bikini first and let me see if it fits before you put the top and skirt over it okay?" he asked her before pushing her softly in the direction of her bathroom. Once she was in there, she stripped of her normal clothes and began changing.

Meanwhile Draco had arrived at Mya's room. "So, you found your sister then? Who is she? Do we know her? Where is she?" he rattled on asking questions about his long lost childhood best friend.

Laughing Blaise answered, "Yeah, she's in the bathroom trying on a bikini for tonight, be nice… you don't have the best history but she agreed to put that behind her okay? You'll be surprised. If I wasn't her brother I would probably be after her. She has changed at lot this summer and tomorrow her glamour charm will be lifted too so people won't even recognise her."

Just then, the bathroom door squeaked open and Hermione shyly stepped out wearing a coral coloured bikini that suited her tanned skin very well. Over the summer her hair had calmed down and was just in soft brown curls down her back. Her body had filled out and she looked a look more mature. She looked stunning.

"Whoa…" Draco said, mouth open.

"Excuse me, back off. This is my sister," Blaise said playfully turning to wink at a now blushing Hermione.

"Sorry, just… are you really Mya?" Draco asked quietly.

"Yes I am, I know we used to be very close, and if you don't mind I would like to forget our years at Hogwarts and be friends. After all, you're my brother's best friend. We have to get on," she said smiling.

"I would like that Mya," he said smiling a rare genuine smile back. After that, Hermione returned to the bathroom and placed the black vest-type top on over her bikini top while putting a small skirt on as well. Stepping out she took the white flip-flops her brother offered her and they sat and talked for a while; just the three of them getting used to each other again. Each of them was secretly worried it would be a bit awkward at first, but as soon as the first sentence was uttered, it was just like they were never separated. They all fit together nicely and understood each other perfectly. A knock on the door interrupted them.

"Hello everyone, the stylist is here for you now Mya. Boys are you staying with her?" asked their Mother.

"Yes!" they chorused. Hermione grinned.

A slightly older lady walked in holding a tray and bucket. Hermione was sat in a chair facing away from the mirror with instructions to sit still. She just talked to the boys while this woman worked on her until she finally looked in the mirror. She gasped. She didn't look like this before, she looked really pretty.

She had a light layer of water-proof mascara, coral coloured eye shadow to match her bikini and a pale pink coloured lip gloss. Her hair was up in a messy bun of curls with a few hanging over her shoulders. They boys nodded their approval.

"Mya, we're going to get ready too, you can come if you want?" Blaise asked her.

"Sure, I don't want to sit here by myself," she skipped past them out of the door and up to her brothers. "You have two beds," she pouted.

"Well Draco stays here practically all the time he isn't at school," Blaise explained.

"Okay cool, guess we'll see loads of each other then," she said winking at Draco. Blaise went into his closet and came out with a pair of swimming shorts and a shirt. Draco meanwhile, summoned his out of his trunk. Draco went into the bathroom first emerging in just his swimming trunks, then Blaise went it to change too. Draco began pulling his shirt on as well when he caught Mya staring at his chest.

"See something you like?" he teased, continuing to pull his top on. Blushing Mya looked down, not replying. Luckily Blaise walked out, dressed a minute later.

"Let's go then," he said leading his sister and best friend out of his room.