A/N: Now, the person we've been waiting for. I present to you...James Potter! *claps wildly*

August 12th, 1970

Hermione woke in a comfortable bed...which was how she knew she wasn't in the Hospital Wing. There was a weight at her left side, pulling the silky sheets over that way. She groaned, and the weight shifted. Hermione opened her eyes to see a headful of messy black hair propped up on folded arms at her side.

"Harry?" She croaked. Her throat was dry, and her voice scratchy. "Where am I?"

Harry's head shot up. "Myna? How are you feeling? Are you okay? I'm so sorry!"

Hermione gaped at her best friend. Somehow, he had de-aged. His haggard face that had seen more things than most adults was now round and boyish, with...hazel eyes behind round glasses, instead of bright green.

"Who's Myna? My name's Hermione!"

Harry's eyes widened and he frowned. "Mum! Myna's awake!" He called. A tall woman swept into the room. She was beautiful, with wavy, jet-black hair and silvery-grey eyes, and carried herself like a lady.

"Myna!" The lady exclaimed, pulling Hermione into a hug. Hermione tugged away, ignoring the hurt look that the woman quickly masked.

"Who's Myna?" She asked again. "And why's Harry younger?" Harry and the black-haired woman looked concerned.

"Myna," Harry said softly, "My name's James Potter. Your name is Myna—you're my twin sister. This is our mum, Dorea Potter, neé Black."

"No," whimpered Hermione. "No! Where's Harry? What've you done with Harry? Where's Ron? Luna? Ginny? Am I dead?"

Harry—James—looked at her like she'd gone crazy. "Myna, you're not dead. Don't you remember? We were playing around with Mum's and Dad's wands, and I cast a spell I'd overheard an older boy talk about, and you were hurt. I'm so sorry! I never meant for that to happen!"

"What's the date?" Hermione asked.

"August the 12th," James answered.

"And the year?"

James looked worried. "You must have memory loss, My. It's 1970, of course."

"No," Hermione whispered. Harry, Ron, Ginny...they were all gone. Or rather, hadn't even been born yet.

"Let's let her have a minute," Dorea told her son softly. James cast one more forlorn glance at his twin sister, but closed the door behind him.

Hermione lay in bed, looking up at the ceiling. How could this be possible? She was Myna Potter, twin sister to James Potter, her best friend's father... It was wrong on so many accounts. But it had happened.

Why could she remember everything from her life as Hermione Granger, but nothing from her life as Myna Potter?

No wonder Remus and Sirius had been so sad. They had had to see the love of their life a child again!

And—oh Merlin! She'd asked her nephew for kissing lessons! Ugh, that was so wrong!

Maybe she could stop the war! Maybe she could prevent all those unnecessary deaths. But, no...bad things happened to those who meddled with time.

"James?" Hermione called softly. She had a feeling he was standing right outside her door. Sure enough, a second later he poked his head in. The sight of his unruly hair, so like Harry's, was almost enough to send her into tears.

"What do you need, Myna?" James asked softly. He tried to hide his disappointment at her use of his full name, and succeeded only slightly. He was sure that Myna was mad at him. In reality, Hermione was just confused.

"I can't remember anything. Why can't I remember anything?"

"I don't know," he replied, "But I can tell you some about your—our—life." At her nod, he began.

"Our mother—Dorea Black—fell in love with our father—Charlus Potter—when she was quite young, around 20. Her family disapproved of him wholeheartedly, but she didn't give up, and married him a few years later. The Blacks—nasty people, them—disowned her for marrying a "blood-traitor".

"They were married for nearly three decades before ever reproducing, and doctors warned Mum that the baby might be still-born. Imagine their surprise when, not one, but two babies were born—both as healthy as could be.

"We did everything together, Myna. We're twins. You're the other half of my heart, and I of yours. We took our first steps at the same time, learnt to read at the same time, first showed signs of magic at the same time... Hell, we even drooled at the same time!

"And then a week ago, we were fooling around with Mum's and Dad's wands. We were just using silly hexes, like the Laughing one. And I...I tried a spell that an older boy was telling his friend about. He said it helped him win lots of fights, and I thought he meant wand-fights. Turned out he meant fights against beasts, like when he was hunting. And I used it on you, My! I hurt you! I'll never forgive myself."

James broke off, and flung himself onto his sister, burying his face in her side. His shoulders were shaking with suppressed sobs. Myna touched his arm gently.

"It's okay, Jamie. I forgive you." At her words, her brother looked up. His eyes were puffy and red, his face wet with tears. He wiped his cheeks and gave her a weak smile.

"Jamie," he whispered hoarsely. "You called me Jamie." Myna smiled tenderly at her brother.

"Jamie," she said again. "It wasn't your fault. You didn't know what the spell did." James shook his head, scrubbing his eyes and wiping away the last traces of his tears. "Just out of curiosity...who was the older boy?"

"His name's Antonin Dolohov," James responded.

Myna's head whirled. Dolohov... It was his custom spell. He'd used it even as a boy.

"By the way, My...who is this Harry guy I need to kill?"

Hermione learned a lot about Myna over the next few days, and her 'odd' behavior after her accident faded as she became accustomed to being called 'Myna' and 'Mine' instead of 'Hermione' and ''Mione'. Her memories of Myna's life up until when she'd traveled back in time slowly came back. It took her awhile for her to stop calling James by his son's name, and even longer for James to stop annoying her for information about "this Harry person who's been near my sister for long enough that she thinks her darling brother is him".

When she was first deemed well enough to get out of bed and wobble around on legs that hadn't been used for over a week, she went immediately to the full-length mirror on her wall. What she saw amazed her.

Myna Potter had delicate, creamy skin instead of the tan she was used to, and sparkling grey eyes in the place of Hermione Granger's dull, chocolate-brown ones. And instead of the plain brown, bushy rats-nest of hair, she had a wild, unruly mane of black curls that tumbled down her back to her waist like an untamed waterfall. Her teeth were straight and white, her lips rosy and full—but her mischievous grin, her kind, friendly smile, the quirk of her lips...it was all the same.

It was disconcerting to be back to about 4'7" from her nearly adult height, which was at least another several inches taller than her new vantage point, but she managed.

Myna Potter was a proper lady, with a clear, melodious voice and sophisticated, cultured tones. Her manners and etiquette had been perfected for years, and everyone enjoyed her witty conversation at tea-parties. She (re)met Augusta Longbottom, who was a very pretty lady back then, but still with quite the sharp tongue.

She and James had a private tutor, with whom she had learned many things. She had a better understanding of Pureblood customs, as she had been raised with them all her life, and also Pureblood upbringings. Her father taught her much more about Occlumency, and even explained and showed her the basics of Legilimency, though he warned her to not use it in petty situations or for fun. She finally understood why Lucius Malfoy had been so unhappy (to say the least) with his son's being overshadowed by a Muggleborn. Purebloods had much better educations.

She found it very annoying to have an eighteen-year-old brain stuck inside an eleven-year-old body, but her parents weren't fazed in the slightest when she started rattling off facts about stuff from centuries ago. Apparently Myna Potter did this quite often.

She also continued to try for her Animagus form. Hermione Granger had retained the book by memory in almost perfect detail, and she dutifully meditated every night before bed. She knew from Remus and Sirius that Myna Potter was an eagle, but she had doubts since it was now Hermione inside of Myna's body, not the girl they'd known in their school days. Speaking of which, she couldn't wait to meet everyone—young Snape, Lily Evans, Remus, Sirius...the only one she could live without ever seeing again, even young and maybe not yet evil, was Pettigrew.

Charlus Potter was quite busy with work, but Myna was his baby girl, his darling princess. Dorea was a kind but firm woman, and very skilled in the kitchen, and they both doted on their children.

The months flew by, and September was almost upon them. They both received their Hogwarts letters and shopping lists for first-years.

So, at the end of August, Dorea took the twins to Diagon Alley.

August 29th, 1971

"Myna, let's go to the Quidditch store!" James was making his infamous puppy-dog eyes, but Myna—or rather, Hermione—had grown up around Harry, who made the exact same face, so she was immune to his charms.

"I'm going to Madam Malkin's," she informed her brother bossily. "You can either go with Mum to get books or come with me."

"Why do you get to go to stores by yourself?" James whined.

Myna smirked, quite a Slytherin look. "Because, brother o' mine, I'm not the one who tried to sneak into Knockturn Alley last time we came. No, indeed. That was all you."

Dorea tried, and failed, to hold back a snicker. James turned to her and pouted, crossing his arms stubbornly.

Myna smiled sweetly at her mother. "Mummy, do you trust me to babysit Jamie while you get our books?" Dorea smirked back at her daughter.

"Of course, dear. I'll meet you both at Ollivander's." She turned to James, her expression stern. "No trying to get into Knockturn Alley. No wandering off on your own. Stay with your sister."

James snapped his heels smartly and saluted. "Ma'am, yes, ma'am!"

This time, it was both Dorea and Myna who laughed. James attempted to keep a hurt expression, but caved when his sister doubled over clutching her stomach, and guffawed loudly.

"Let's go, Jamie," Myna said, shoving her brother lightly in the direction of Madam Malkin's. They quickly found what they were looking for: plain, black robes. James also got a plain black winter cloak with silver fastenings as the list said, but Myna bought a light cloak that could change colors with a simple spell and Warming Charms could be cast upon. Most cloaks didn't have a good reaction to Warming Charms cast directly on them, and the spell had to cast over an entire person's body, which taxed their magical core.

They met up with Dorea at Ollivander's, as promised, and James found his wand on the second try. It was 11 inches, mahogany, pliable, with a unicorn tail core. Myna took quite a while longer, and she was surprised to find that the most violent reaction was with her former (future?) wand: 10 3/4 inches, vine wood, with a dragon heart-string core. Instead, her new wand was 12 1/2 inches, of blackthorn wood, quite stiff, with an Augerey tail feather. *

They left Diagon quite happy with their purchases. Myna had found an orange, half-Kneazle kitten with a squashed face and promptly bought him. The storekeeper gave him to Myna for half-off since "the darn thing scares away customers." James thought his sister crazy, and bought a snowy white owl, making Myna's lips quirk sadly.

Like father, like son.

A/N: The next chapter will be on the train, meeting everyone. I thought that Hermione got over the shock rather quickly, but I didn't really want to babble on without any action.

I read online that blackthorn wood is best suited for warriors, but for those who practice the Dark Arts. Myna is definitely not a practicer of the Dark Arts, but she is a warrior, so I thought this would work.

Augurey tail feather comes from Irish phoenix, which is good for those who do well in Divination. Yes, I know—both Hermione and Myna are against Divination, but she does come from the future, and knows quite a bit about what will happen. I hope this makes sense...

Unicorn tail cores in wands are for those least likely to turn to the Dark Arts, and James is about as against that as they come, so I made this his core. It never says what the core of his wand is, so I thought it fitting.

Thanks to: KEZZ 1, afmorales21, Adhara Cassiopea Black, Viveen, MaharetLyn, Hermoine Lyra Malfoy-Riddle

Thanks also to: hillstar from The HP Fanfic Writers Support Corner for reviewing. Check out her forum!

Thanks for getting me to my review goal! Next goal: 50. (Yes, I know that I only need 2 more reviews to get there, but it's just such a nice, even number! Plus, it will be an amazing milestone for me.)

One more thing: I am writing a one-shot for Christmas, which will probably be posted Christmas Day. Keep an eye out for it! It will be called "Fake It Till You Make It".