A/N: I guess I've been reading too many crossovers of Harry Potter/Percy Jackson. But I certainly never saw a fanfic like this one, so I've been itching to write one. So, it's my first fanfic with Harry Potter whatsoever and one of my best friends is a huge Harry Potter fan (Potterhead), so I'm sure she would kill if I make any mistakes other than the timeline (which was conveniently manipulated so the story can happen). I hope you guys like it and forgive any grammar mistakes, since English isn't my first language and I'm still learning. Oh, and about Fem!Percy's name… Well, I've been reading too much FMA manga and there's my other fanfic Winry Jackson and the Lighting Thief, so, I couldn't think of her with any other name. Sorry.

Disclaimer: Sorry, I do not own Percy Jackson and the Olympians, Heroes of Olympus or Harry Potter. They belong to Rick Riodrian and J.K Rowling.

Prologue: The Child.

Sally Jackson did not plan that trip to England.

Actually, the young woman never wanted to go there, much less with the risk of putting her young daughter in the danger that was an airplane. But, she couldn't ignore the strange hunch she had of coming there, almost as if something was calling her there (which she wouldn't be surprised if there was, since her life was full of supernatural things). Don't get her wrong, Sally was never an impulsive person, but her guesses and instincts were usually very right, so she had to go on that trip.

So, after praying like crazy for weeks to Poseidon and whatever other gods (she often returned to Hermes, since he was the god of travelers and, from what Poseidon said, a very helpful man) so that Zeus wouldn't find out about her on the sky, she booked the shortest flight to England.

Sally spent all the flight praying while holding her daughter's hand. Three-year-old Winry Jackson didn't seem aware to the danger she was in, so she was very much her bubbly and hyperactive little self, not stopping once in her seat (and getting scolded by the "pretty ladies", as the young demigoddess called them, more time than her mother could count). So, as soon as they landed, the older Jackson woman nearly kissed the ground while her daughter was running around the airport after hours of sitting down, which was torturous for the poor ADHD girl.

After settling down in a small and cheap hotel, she took Winry for a walk. Sally felt incredibly frustrated. She came all the way to England just for following a hunch and she didn't even get anything out of it, much less something important enough to risk her precious daughter on an airplane trip. Poseidon must already be disappointed about how irresponsible she was of a mother to their little. She didn't know what she was doing in the completely ordinary town of Little Whinging, where she saw like the strange thing she saw in New York.

Sally was about to finally lose her patience and curse out aloud and probably regret it since Winry had a very loud mouth and the curse word would probably be the next reason why her daughter was expelled from her next… Kindergarten (she still didn't know how anyone could get expelled from there, but the youngest Jackson managed this feat).. But, the, she saw something in the middle of a sidewalk.

The street was very dark and poorly illuminated, but she could still see the small form there. Curiously, she tugged the very hyperactive Winry Jackson along as she got closer to the form. Once she could see it properly, she gasped. Curled inside in a light blue blanket was a small baby. Without thinking, she lifted him up from the sidewalk and held him protectively like the mother she was.

With him closer, she and Winry got a better look at the baby, who was still soundly asleep (Sally smiled softly remembering how her daughter had been just like that as a baby). The baby, who she noticed was a boy, had jet black hair and cute flushed cheeks. Winry was the first one to notice the lighting-shaped scar on his forehead and Sall only noticed herself when the three-year-old tried to touch it. And Sally barely noticed the slight white glow around him and decided, very hesitantly, to ignore it for now. The baby's health was more important now.

"Mama?" Winry asked while Sally was cheking the baby for any anomaly other than his scar. "There's something in the blankets, it has strange words… 'Wa dint weat taek froek'?"

"What is it, dear?" Sally gently took the paper from her dyslexic daughter who was barely starting on learning how to read (Sally started as early as she could, since it would be herder for Winry than for the other kids). She immediately regretted ever reading the words written there.

"We don't want this FREAK."

Sally felt herself boiling with anger. Who would ever call their children a freak? Much less such a healthy and beautiful baby as the one she was holding?

"Mama? Are you mad at me for not reading the big words right?" Winry's childish voice brought her out of her thoughts.

The Jackson nearly asked where she got this idea and then she realized she probably didn't have the best expression or aura right now. So she gave her and Poseidon's daughter a comforting smile and the kid finally relaxed again.

"No, dear, mama is not mad at you." Sally said kneeling down and balancing the baby in her arms. "Mama is just mad because this baby's mama didn't want him."

Winry gasped, her sea-green eyes widening greatly.

"Can someone's mama not want them?" The little girl asked with childish curiosity and indignation.

"Yes, there are some very bad mamas who don't want their babies." She said sadly, holding the small baby a little tighter.

"But that is not fair to the baby!" Winry said angrily, her tree-year-old mind understanding what the baby's family didn't seem to understand. ''We have to find this bad mama!"

"Yes." Sally frowned. "Yes, we have."


"What do you mean you can do anything?" Sally asked as calmly as she could (which was very calm, since she had to take care of Winry everyday and not go crazy) as she stared at the good-for-nothing English policeman.

"What I mean, ma'am, is that there's nothing we can do at the moment." He said in a British accent. "With only the note and the place where you found the child, we can't know who are his parents. And, with this note and since no black-haired baby had been reported as missing, the chances of someone appearing are low, since it seem like the child was abandoned."

The Jackson nodded slowly, being the reasonable woman she was. Sally quietly went back to the room where Winry was holding the baby. She really didn't know what to do. The woman knew that baby was important, since not only it was the only major thing that happened on that trip but the child was also glowing white when she found him, which started to fade after a while. She couldn't just let the baby go to an orphanage… Alone…

"Oh, baby, don't…" Winry's sweet voice's brought her out of her thoughts and made her look up.

Sally's heart immediately warmed at the scene.

Her daughter was sitting in a chair, holding the small baby boy a little clumsy, but steady. The girl was laughing at the now awake boy and she saw a chubby hand tugging on Winry's twin black braids. As soon as Sally went closer to them, she saw their attention had been lifted from each other to her.

Not only the pair of beautiful sea-green eyes she loved so much were focused on her, but also a pair of sweet and innocent emerald-green one. The baby was looking up to her with his green (why green? Only to make him look even more like her daughter?) and them gave her a cute toothless smile. Yes, it was official.

She fell in love.

"Mama! Look! Look!" Winry chirped happily. "He has green eyes, like me!"

"Yes, his eyes are beautiful, just like yours, sweetie." Sally answered.

"Did you find his bad mama?" Her child asked and the clear-sighted woman was quiet for a moment, trying to think of an answer that the black-haired girl would understand.

"No, sweetie, sorry… We couldn't find his mommy." The greenish-blue eyed woman said.

"Then, can we… stay with the baby?" For the first time since she was born, Winry spoke very quietly and hesitantly.

"What? No, we… We can't…" Sally really didn't know what to say. "We don't have the money to take care of him, dear."

"Please, mama, please. We can't leave him alone! I promise I will even stop buying candy… Everyday…" The sea-green-eyes girl whispered the last part, but her mother still heard and gave a small smile. "Please, mama!"

"Ma… ma?" The baby decided to finally speak to them, his sweet voice filling Sally with the happiness she only felt when Winry spoke her first words. "Mama!"

"Yes, she's mama…" Winry laughed, and made the boy sit up.

"Mama!" He laughed again, liking the attention he was getting from the older girl.

"Yes, dear…" Sally said lovingly, gently taking the black-haired boy in her arms. "I'm mama."

"Yes!" The tree-year-old girl jumped up, hugging her mother. "I have a baby brother! I have a baby brother!"

"I have another child…" Something told her that that child would bring a lot of problems to her, but, it was the same feeling she got when she was with Poseidon, so she didn't mind. It was worth it. "Now, what are we going to name him?"

"Can I choose? Can I choose?" Winry was jumping like she was sugar-high, tugging on her mother's dress.

"It's 'May I?', Winry, to be polite." She said, smiling as her new son tugged on her brown hair. "And I'm his mama, aren't I supposed to be the one choosing his name?"

"Mama, look at my name." Her daughter said as if it explained everything. "And I already have the perfect name for him: Orion!"

"Orion?" Sally immediately recognized the name. "As in Po… The Greek sea god's son?"

"Yes! I like his story because Artemis is in it and I love Artemis… And Poseidon too!" Winry blabbed.

"Hum, I think it fits for your brother's name…" She looked down at the baby. "Do you like it, son?"

Orion laughed and touched his new mama's cheek.

"Yes, then I think it's settled. Orion Jackson, I like it." Sally smiled at Orion. "Welcome to the family, dear."

Even though she was happy, she had a hunch that the next years wouldn't' t be easy.

Oh, well, she'll just get used to it.

A/N: I hope I characterized Sally well. I love her character and, even though she was always calm, I think her mother instincts talked a little louder this time. The chapter was a bit short, but it was just the prologue. I hoe I can make longer chapters in the future. So, I'm not going to do Orion/Harry's childhood, I'm already going to skip ten years in the future, like in the book. Review and tell me what you think about the fanfic and if there's something I should improve.