I wanted to write a Harry Potter fic but I didn't know how. So instead you get a crossover!

If you, random, unsuspecting pedestrian, are reading this, well good. Because I might need your OCs and also a co-writer because I rarely get things done. Can't you see most stories on my account are one-shots.

I apologize in advance if I will spell anything wrong in the future or get some preference wrong or use incorrect grammar or vocabulary.

Oh well, enough of me rambling, enjoy!

Prologue:

There are witches, there are demigods, and there are Hybrids. Hybrids are half-born wizards and witches, the other half being part god. And they are rare. Very rare. You see witches and wizards are already such a powerful race, and so are demigods, that's why they are kept apart from each other, concealed from each other, just so in case they won't start World War III. But sometimes the gods can't help it, it's risky and even hazardous, their children might end up becoming ticking time bombs, but love conquers all. The offsprings are called Hybrids and they are the supposed 'bonds' between the wizarding world and the demigod world. But will they save the worlds, or destroy them?

3 years ago

Avalon was so excited when her Hogwarts letter came in. She couldn't wait to go to Hogwarts, after hearing endless stories from her cousins, brother and sister. Avalon is apart of the Brinley family, one of the oldest wizarding families ever, and had a reputation for being fiercely loyal to Ravenclaw. Every single member of the Brinley family was placed in Ravenclaw because in the Brinley family, intelligence is superior.

It's easy to spot a Brinley, with their emerald eyes and golden-blonde hair. Often found in the library or had their noses buried in a book. Avalon was no exception, in terms of personality. But in appearance, no one could've guessed she was a Brinley. She was pale and had light blue eyes and blue-black hair. Kind of. Her hair is blue-black, but had different shades of blue towards the end. People always thought she dyed it but, in honesty, it was natural. And she loved her hair. She always wondered why she looked so different, "Because you got that from daddy Ava." Her mother always said when she asked. Her family always said she was 'destined' to be in Ravenclaw. She had dyslexia, that's why, but she still managed to read and write like any other person in her family, and also because she learned to read and write faster than every other Brinley toddler. By the age of 5, she can speak fluent English, Greek and French.

Currently, Avalon was under the scrutinizing gazes of muggles passing her by at King Cross Station, probaly wondering "Is this kid lost?" "Why does she have an owl?". "Ava, you won't crash into the wall, just run through it." Avalon bit her lip in hesitation. "Trust me Ava." Her brother Christian said beside her. Christian was two years older than Avalon, so was Freya (they were twins) and he was an ordinary Brinley, with the ordinary Brinley eyes and hair and personality but with an extraordinary talent in Quidditch.

Finally giving in, Avalon ran through the wall in between platform 9 and 10. And then she arrived. The scarlet train with the words 'Hogwarts Express' written in big, bold letters. The platform was crowded with parents bidding farewell to their children, nervous first years standing around rather awkwardly, returning students laughing and squealing and talking, big suitcases in clusters, and a blur of red hair huddled at the middle of the platform. They were the Weasleys, with their infamous red hair.

"Okay now Ava. I'm going to go join my friends. Wait, where's Freya?" Christian asked. Avalon pointed to a small group of girls giggling and gossiping. "Oh, anyway, here's some galleons and knuts in case you want anything from the trolley. Go..uh..make some new friends, yeah? Bye!" Christian jogged away, dragging his suitcases along with him. Avalon dragged her suitcases and found herself an empty compartment. She set down her bags and took out a muggle book she brought along with her. She always had a fondness for muggle books, fiction or non-fiction. Especially Greek Mythology.

Suddenly, a mop of red hair popped into her compartment. Avalon almost yelped. "Hi, are these seats taken?" The red-headed girl asked. She had hazel eyes and a splash of freckles across her face. "Um..no?" It kinda came out like a question though. "Oh ok then. Al! I found some seats!" The girl yelled into the corridor. "Sorry." She said sheepishly. A boy then popped in. He had jet-black hair and green eyes. "I'm Rose. Rose Weasley. This is my cousin, Albus." The girl said. She was a really perky girl. "Hi." The boy, Albus, said. "Hi. My name's Avalon Brinley." Avalon said a little timidly. "A Brinley? Woah. How cool is that? Isn't it Al? But you don't exactly..." Rose's voice faltered. "Look like a Brinley? Yeah, I get that a lot. I get it from my dad, but I never actually seen him before." Avalon continued Rose's sentence. "But you're a Weasley. Must be fun to have such a big family that doesn't buy you a library of books every Christmas." "Mm.. We get Grandma Molly's handmade jumpers instead." Albus murmured. "You're a Weasley?" Avalon asked. "A Potter." Albus corrected. Avalon stared at him in disbelief. They stayed quiet the whole ride, the silence filled with Rose rambling.

The train ride was uneventful. But then they arrived. At the one and only Hogwarts. Avalon stared in awe. A big man, a half-giant named Hagrid, had directed the first-years to the boat ride. Avalon sat with two girls, Nadia and Isla. Nadia was a Quidditch-fanatic, with big brown eyes and black hair. Isla was a muggle born who enjoys reading just as much as Avalon did.

The Great Hall was indeed great. With floating candles, long tables and a flag for each house. Last year, Gryffindor won the House Cup, so the hall was decorated in Gryffindor red. Avalon's sister, Freya shot her an encouraging smile from the Ravenclaw table.

It's time for the Sorting. The Sorting Hat sat on a stool, awaiting someone's head to be on. Avalon rubbed her sweaty palms together.

Avalon was so nervous, the next thing she heard was her name being called.

Darn you ancestor, why must my surname start with a B? Avalon thought.

Avalon walked shakily to the stool. Headmistress McGonagall placed the worn leather hat on her head.

A Brinley I see. Would you like to be a Ravenclaw, just like the rest of your family?

The Hat asked her.

Put me where I truly belong. Avalon told the hat.

The first ever Brinley that let me choose! Well, I can see you are smart, like the rest of your family. You are brave too, Gryffindor might be a good fit. But you are ambitious. Have you noticed how cunning you are? So I guess, it's..

"Slytherin!" The Hat shouted.

Almost immediately, whispers rippled through the students. Possibly, A Brinley? Slytherin? Impossible! Avalon looked up, expecting the look of horror on her siblings and cousins' faces. Instead, they looked...expectant. But why? Avalon had broken the cycle of Brinleys in Ravenclaw. She stalked off to the Slytherin table. This is home now, Avalon thought, Home in Slytherin green. Apparently, that wasn't the only shocker that night. Albus, the Potter kid was sorted into Slytherin, Scorpius Malfoy was in Gryffindor and Rose is a Ravenclaw. Well the Rose one wasn't that shocking.

That night, Avalon owled her family a letter saying she was in Slytherin. Her dormmates weren't snarky or insulting or the typical Slytherin stereotype. They were pretty nice to be honest. There was Celia Zabini, a small girl with cocoa-coloured skin and black hair. Elisabetta Frasier, who was part Veela. Devara Quinton, who had sandy-blonde hair and sea-green eyes and lastly, Isabel Cho, a quiet Asian with almond eyes and brown hair.

"Mum will kill me. Elena probaly already owl-ed my mum telling her I was in Slytherin. She'll go all haywire and crap, probaly start swearing in French and yelling at my dad he should've sent me to Beauxbatons. Or maybe even disown me." Elisabetta plopped down on her bed and started babbling about something that involves crêpes, bacon and monkeys wearing their underpants inside out. "So you're a Brinley, huh? How'd you feel, being in Slytherin and all. The house everyone just loves to hate." Celia asked Avalon. "I'm pretty alright actually. I mean, this will be home for the next seven years." Avalon said. "You think like a Ravenclaw. Being logical and stuff. I wonder why you weren't sorted there." Celia said. "The Hat told me something about 'being ambitious' and 'noticing how cunning I am'. That ol' hat probaly lost some of his marbles and wisdom throughout the years. " Avalon shrugged. Celia let out a laugh. "I like you. You have the Zabini approval."

That night was when her great Slytherin adventure started.

Avalon grew to like her classes, excelling in each class (because she was trained to be a Ravenclaw. All that knowledge wasn't wasted, you know), her favourite being Potions. She had a little circle of friends, which included Rose, Scorpius (shockingly) and Celia. She really hated Albus, because he treated her bad, always insulting her. Avalon couldn't even stand his name.

She felt at home and completely safe in Slytherin and she loved it there. But it wasn't until the summer holidays, had she found out she was a demigod.

There was a family gathering at Uncle Scott's whom of which was in America. Avalon was playing in the garden with her Veela cousins, Olivier and Genevieve when a hellhound came out from nowhere and attacked them.

Genevieve pulled out her wand and casted a quick Incarcerous.

Avalon of course was screaming and yelling "Oh shit. Oh shit." The adults ran out to the garden, her mother scolding her whilst gris-walking to the garden. "Oh shit." Her mother muttered under her breath when she looked at the hellhound.

"Evanesco." Avalon's older cousin, Ethan pointed his wand and said. The beast vanished. "Ava, are you alright?" Her mother sat her down. "T-the..thing...it was big..its teeth..it was trying to k-kill me.." Avalon whispered. "Ava, I think it's time you found out about something. But we need to go somewhere first." Her mother picked up a pencil and uttered the word "Portus." The pencil emitted an odd blue light and then they were transported to the middle of a forest.

There was a stone plaque. With some Greek symbols inscribed onto the stone. Camp Half-Blood ,Avalon translated, Huh. Wonder what that means. Then, suddenly, the scene in front of her changed. What was once the green of the forest was now replaced by some teenagers playing tag, cabins and a centaur? Avalon yelped in surprise and pulled out her wand.

Hey, you can't blame her. She once read an article saying, quote 'Centaurs are carnivorous, vicious creatures that will eat both wizards and muggles alike.' "Chiron." Her mother nodded. "Mum. What. Are. You. Doing?! Centaurs are dangerous." Avalon whisper-yelled. "Ava, this is Chiron. He won't kill you, or eat you. I can assure that." Her mother told her. Avalon slowly put down her wand. "Avalon Brinley, it's a pleasure to meet you." Chiron said and stuck out his hand. Avalon reluctantly took it. "Come." Chiron trotted away, Avalon and her mother following closely behind. There were strange looks from the other teenagers but it wasn't like Avalon cared. They were lead into some place called the Big House (gee, real original name), and into an office. "Take a seat." Chiron motioned them to the seats.

"I assume your mother has told you?" Chiron asked me. "Told me? Told me what? Mum, what is he saying?" Avalon started firing questions like a machine gun. "So..no." Chiron said to Avalon's mum. She nodded. "Well then. Avalon, come along with me. I will not eat or kill you. I promise." Chiron told Avalon. After hesitating for a while, Avalon followed him to some place.

It was the attic, full with artifacts that should've been in a museum. Ancient Greek relics piled high one after another. Chiron stopped abruptly, bent down and picked up a scroll and gave it to Avalon. "It's from your father. He told me to give it to you when you are of age." Avalon unfurled the old piece of parchment.

Dear Avalon,

I can only assume you take after your mother, being studious and all, so you probaly know about Greek Mythology already. Do you know the stories? Of demigods? Heracles, Minos, all that? How they are part-god and the other part human?

In today's society, the legacy of gods are still passed down in demigods. You, dearest daughter, however are special. Instead of being part-god, part-human, you are part-god, part-witch. And in today's world, or any other world, that is dangerous. You are very powerful, you should know that.

I am your father, Avalon. I am Hermes, the god of thieves, mischief, merchants, roadways, travelers and the messenger of gods. I do know of Hogwarts and witchcraft, and if you are sorted into Slytherin, well, that came from me. Sorry.

This is Camp Half-Blood where demigods, like you, train and live during the summer. You can even choose to be an all-year camper. But you would want to stay at Hogwarts, right? You will be living in the Hermes cabin, along with your half-siblings.

And if you're wondering, those monsters you read in Greek myths, they are real. The gods are real. The myths are all real. You come to Camp Half-Blood to learn to fend yourself from these monsters. I don't want you dead. You are after all, my daughter. And I've learned my mistake to not neglect my children again.

Don't ever show or tell anyone in the demigod world your magic, vice-versa for the wizarding world. If you do, you'll be in grave danger. Chiron and your family already know though, but don't tell this to anyone else.

When you read this, I want you to speak these words. ασήμιφάντασμα. This is my gift to you. Stay strong.

Hermes :)

As soon as Avalon read the piece of paper, she was shocked. Her father has been a god all along, and he knew what an emoticon was. So that's where she got the eyes from, why she didn't look like a Brinley, why she was sorted into Slytherin. It all came rushing like an avalanche. She read over the words.

I want you to speak these words.

ασήμιφάντασμα. Asimifantasma.

Silverghost.

As soon as she said it, a silver dagger with a leather grip appeared in her hands. "It seems like your father has given you a weapon. It's called Asimifantasma. That's the name of your blade." Chiron leaned over and told her. "Nah, Silverghost seems kinda long, I'll call it Bob." Avalon answered, still enchanted by the gleam of the blade.

"I'll have one of the campers show you around. Do you want one of your half-siblings?" Chiron asked, stepping out of the Big House. "Anyone's fine, really." Avalon replied. Chiron called over some boy named Reagan who had brown eyes and blonde hair and was a son of Hephaestus.

Avalon was shown the swordfighting arena, the rock climbing wall, with the lava underneath, the strawberry fields, the archery range, the stables (Avalon freaked when she saw the pegasi) and lastly, the cabins.

"Who's your godly parent again?" Reagan asked. "My dad's Hermes. Apparently." Avalon answered. "You talk funny." Reagan said, talking about her accent. "Well you smell funny." Avalon retaliated. He kept quiet after that.

"So this is your cabin. Beware, your own siblings will steal, prank and tease you until you want to take a knife and stab their faces." Reagan said then walked out. "Oh, and welcome to Camp Half-Blood. Survival tip: don't die." And with that, he closed the door.

Well that was a very long prologue. Oh well. Anyway, next chapter will be a submit your OC! Stick around for that.

Don't forget to review and follow and favourite this story, you'll get a cookie (::).

~Wintaa