Disclaimer- I do not own Percy Jackson or Harry Potter. They belong to the wonderful Rick Riordan and Joanne Rowling.

*I don't own the first two letters, I took them from Harry Potter and the Philosopher's Stone. Except for changing the names and date in them. I did that part myself.*

Previously-

Suddenly, an owl swooped down and landed on the table, right in front of me. I didn't think that much of it at first, considering who my mom was. But little did I know that that owl would change my whole entire life.

I ignored the owl until it started pecking at my leg. I then noticed it had a letter in its beak, addressed to me.

Ms. C. Black

The Athena Cabin

Camp Half Blood

Long Island Sound

New York

Um, that's a bit creepy. Who would know exactly where I live, other than those in Camp?

I took the envelope from the owl's beak and looked at it. The envelope was made of yellowish parchment, and my address was written in emerald-green ink. On the back was a coat of arms; a lion, eagle, badger, and snake surrounding a letter H.

I was about to open the envelope, when I remembered I was right next to all of my siblings.

"Hey guys, I just remembered that I forgot something in our cabin." My siblings sent me curious looks, which I just ignored.

I ran back to Cabin 6 and jumped into my bunk. I slowly opened the envelope.

HOGWARTS SCHOOL of WITCHCRAFT and WIZARDRY

Headmistress: Minerva McGonagall

Dear Ms. Black,

We are pleased to inform you that you have been accepted at Hogwarts School of Witchcraft and Wizardry. Please find enclosed a list of all necessary books and equipment.

Term begins on 1 September. We await your owl by no later than 31 August.

Yours sincerely,

Minerva McGonagall

Headmistress

What? Hogwarts? First, who names a school after pig skin? Second, witchcraft and wizardry? The closest thing that there is to witches and wizards are Hecate's children!

I decided that reading the other 2 letters might've made things easier to understand.

HOGWARTS SCHOOL

of WITCHCRAFT and WIZARDRY

UNIFORM

First-year students will require:

1. Three sets of plain work robes (black)

2. One plain pointed hat (black) for day wear

3. One pair of protective gloves (dragon hide or similar)

4. One winter cloak (black, silver fastenings)

Please note that all pupils' clothes should carry name tags

COURSE BOOKS

All students should have a copy of each of the following:

The Standard Book of Spells (Grade 1)

by Miranda Goshawk

A History of Magic by Bathilda Bagshot

Magical Theory by Adalbert Waffling

A Beginners' Guide to Transfiguration by Emeric Switch

One Thousand Magical Herbs and Fungi

by Phyllida Spore

Magical Drafts and Potions by Arsenius Jigger

Fantastic Beasts and Where to Find Them

by Newt Scamander

The Dark Forces: A Guide to Self-Protection

by Quentin Trimble

OTHER EQUIPMENT

1 wand

1 cauldron (pewter, standard size 2)

1 set glass or crystal phials

1 telescope

1 set brass scales

Students may also bring an owl OR a cat OR a toad

PARENTS ARE REMINDED THAT FIRST YEARS

ARE NOT ALLOWED THEIR OWN BROOMSTICKS

That helped. It says to wear robes? And pointed hats? I wouldn't be surprised if the students there had green skin!

I finally took out the last letter, which was written on a thinner sheet of parchment, and written in a different colored ink. Hopefully this one made more sense than the first two.

Miss Carina Black,

I understand that this is all probably very confusing to you, and you don't understand a word that the first two letters said.

I would have sent someone over to tell you about the wizarding world, and considering your unique circumstance, maybe have come myself. However, we only do this to muggle-born witches and wizards, and it would have been difficult to explain why a muggle-born had a protective barrier around their home.

Yes, I know of your mother. When I became Headmistress, I was told about your world. Of your father, I'm not sure, but I have my suspicions.

Before I go, I must tell you one thing. Be careful. Your birth could be one of the worst things that could happen to either of our worlds. Yet, it could also be one of the best. All I can do now is to hope that you're a muggle-born witch with a not-so-muggle mother and a not-so-muggle last name.

I know that this letter has done nothing to expand your knowledge of the wizarding world, but if I had actually tried to explain the wizarding world in this letter, it would have been about the length of 7 books and a badly-written play.

So, my child, show this letter to Chiron and he will explain everything.

Yours sincerely,

Minerva McGonagall

Headmistress

I have one word. What?

I mean, I was hoping for a nice, calm birthday where I could relax and hang-out with my friends, but, of course, I get this instead. Curse the Fates.

I decided to follow this Headmistress's advice (who, coincidentally, had the same name as the Roman equivalent of my mother) and started running down to the Big House. I saw my half-brother, Malcolm, walk past and send a questioning look, but I just mouthed back later.

I knocked on the front door on the Big House to see Chiron in front of me, in wheelchair form.

"Hello Cara. To what do I owe the pleasure?

"It's a bit hard to explain. May I sit down? I gesture towards the chair in front of me.

"Of course, Cara," He rolls in his wheelchair to the other side of the desk, and asks," So what exactly is the problem?"

I slide the envelope and all three letters across the desk.

"Well…"