Hey guys! Sorry for not updating sooner but as soon as I got back from America (Which is awesome by the way) i was swamped with christmas stuff. i thought i should update so here it is. i (stupidly) wrote this chapter before i read the reviews and since i planned this story a while a go it sort of fits into the story as being halloween not christmas sorry.

Chapter 15
Disclaimer: I unfortunately don't own Percy Jackson or Harry Potter, the belong to JK Rowling and Rick Riordan

Percy POV:

After our explanation to Harry and Ginny, life continued as usual.

We were in a muggle studies lesson and the teacher announced that we would be looking at muggle history and beliefs for a term.

"We will start with the Ancient Greeks' and Romans' beliefs. Their religion was very complex."

I looked up at this. This would be entertaining.

"Who can name any of the Olympian Gods?" The teacher asked.

Thalia, Annabeth and I put our hands up all together. I went first.

"There are twelve main Olympian gods but many more gods. The male Olympians are in Greek: Ζευς - Zeus, Πωσειδον - Poseidon, Αρες - Ares, ´εφαεστυς - Hephaestus, ´ερμες - Hermes , Απολλπ -Apollo and Διονυσυς - Dionysus. There's also ´αδες -Hades, Θάνατος - Thanatos and ´ιπνος- Hypnos to name a few minor gods." I said.

"There used to be 6 goddesses on the Olympian council but Hestia gave up her place for Dionysus. The other goddesses are Αθήνα - Athena, Αφροδίτη - Aphrodite, ´ερα - Hera, Δεμετερ - Demeter and Αρτημις - Artemis. Each of those is a Greek god or goddess and for Romans they have different names and personalities, but they're still the same gods." If you listened carefully to what Annabeth was saying you could hear the pride when she said Athena and the hatred for Hera.

"Very good! Twenty points each for Gryffindor!" Professor said. "Now who knows any of the basic story of Greek myths?"

This time Thalia answered.

"In the beginning there was Chaos. He created Gaia- earth, Ouranos-sky, and Tartarus -the pit. Gaia and Ouranos had 12 children called the Titans and after years they took over. Kronos was in charge. Kronos had six children, the first of the gods: Zeus, Poseidon, Hades, Hera, Demeter and Hestia. They overpowered Kronos and took over after the ten year struggle of the FIRST Titan war. Zeus had many children- the other gods. Gaia was angry because she liked Kronos, so she had children with Tartarus specifically to destroy the gods. But the Gods defeated the giants with the help of their mortal kids- demigods, in the FIRST Giant War." Thalia explained.

Only me, Annabeth, Ginny, Harry and obviously Thalia, had noticed that we referred to the Gods in the present tense, and that Thals had said the FIRST Titan and Giant wars. Because we had fought in the second Titan and Giant wars over the last 3 years.

Annabeth POV:

When I went to the great hall for breakfast I was surprised to see all the pumpkins, bats and candles floating around.

"Happy Halloween!" Luna said. As she saw me gazing in wonder. "Didn't you celebrate Halloween at your old school?"

"Not like this! It's so cool!"

All throughout the day there were Halloween surprises and some teachers taught us Halloween lessons, in muggle studies, we looked at 'Trick or Treating'. In Charms we learnt a complex spell to make us look dead, however this reminded me too much of the Death mist from Tartarus so I didn't enjoy that as much. In history of magic we listened to Professor Bins drone in about the history of Halloween. And in, well you get the idea.

However the biggest surprise was during dinner that evening. We were sat at dinner as usual waiting for the plates to arrive and when they did they weren't full of normal food, it was all Halloween themed.

"Guys," Ron came up to us after dinner. "There's a Halloween party for 5-7 years in Gryffindor and Ravenclaw. Room of requirement at 8."

"Is it costume? And if so what kinda costume?" Frank asked.

"Yeah, something from your culture, like, muggleborns dress in Halloween costume but wizard families can wear like quidditch robes or something." He smiled and walked back over to Harry and Hermione.

"Should we go?" Thals asked.

"Yes, our culture - sword-fights. And hunting." I smiled.

We decided to go as ourselves without our disguise. Thalia in her hunters uniform with her headband to show her rank. She took her bow, quiver but not her hunting knives.

Percy and I went in our camp halfblood T-shirts and jeans, we also had our swords; riptide and my drakon bone sword from Tartarus. I took my knife as well and my cap. We also put our necklaces on. Percy's had 6 beads and mine had a few more.

Frank and Hazel wore their SPQR tops and had their badges on the front. Frank had a mural crown and a Praetor badge and Hazel had a centurion badge. They had both been given a special badge to symbolise that they were part of the great prophecy. Frank had his bow and quiver and they both had imperial gold swords.

When we got to the party, about half of the people there wore wizarding clothes, and the other half wore mortal halloween costumes. We walked over to Luna and Ginny.

"Why the swords and bows?" Luna asked.

"We do a lot of sword fighting and archery at our schools, that is Thalia's uniform she has to have the bow the whole time at her school. Our schools have less of a uniform except these T-shirts, our necklaces and Frank and Hazel's badges." I said.

"At my school, we don't have prefects, we have ranks, most people don't have ranks, some are centurions, like Hazel, and then there are usually 2, occasionally 3, praetors. I'm a praetor. We have 5 houses and this badge," he pointed to his mural crown, "is for being in first place in my house. Then these badges were to symbolise that we were part of the joint expidition to Greece." Frank explained.

"What are the necklaces?" Ginny asked.

"At the end of each summer, we decide the most important thing that happened that year and each student gets a bead if that event to put on their necklace. For example this bead, has the magical headquarters for New York so it was important in the war. The writing around it is names. The names of everyone who died in the war. Annabeth has more because although you have to be at a school from 11-17 you can arrive earlier." Percy explained.

"Yeah, my family thought I was a freak so I ran away from home and got to camp when I was seven."

The party was entertaining but we left reasonably early because we were quite tired after a long day.

Hopeyou liked it! Merry Christmas and if i don't update Happy New Year