This is chapter four! I really enjoyed writing this one, so I hope you like it!

Thanks to James Birdsong and Hoodedgenius98 for your reviews!

I don't own Percy Jackson or Harry Potter

I was on the train, alone in my compartment. I allowed my mind to drift off. I couldn't relax often as a demigod, but now I felt safe.

I was startled to my feet by a knock on the compartment door.

I had my hand on my wrist, ready to snap off the knife when the door slid open.

"Sorry, did I startle you?" A plump witch pushing a cart that was loaded with candy looked at me quizzically.

"Uh, no. I was already standing." I felt bad lying but something was making my senses go haywire.

"Well, anything from the trolly, dear?" The witch asked.

"No thanks," my voice shook, "I'm not hungry."

The witch closed the door, but before it was all the way closed, I saw a flash of purple behind her. I didn't think much of it.

I sat down, shaking, it clearly wasn't the trolly witch that had made my senses wig out. The feeling was still there and I was alone.

The train lurched to a stop and I tumbled out of my seat. I heard screams throughout the train.

I got to my feet and left my compartment, my hand on my bracelet, fingering each charm individually, wondering which one I would need. I might not need any of them, I could be overreacting.

The train lurched to the side and tilted, threatening to topple for a second before slamming back down on the track.

Definitely not overreacting.

This isn't good. I haven't even gotten to the school yet and we were already being attacked.

I had to find a way off then train, it was clear whatever monster it was had attacked from outside.

I found the door, but there were students crowding around it. A couple of seventh years had taken it upon themselves to make sure no one would get on or off the train.

Nice gesture, but now I had to find another way out. I ran back to my compartment and concentrated.

Some children of Hecate had the power of Umbrakinesis, the ability to manipulate darkness. I happened to be one of them. And with the ability to control darkness comes the ability I'm trying to use now. Shadow travel.

I concentrated until I felt a slight breeze. I was outside the train. It had worked!

I ran along the length of the train, looking for whatever monster had decided to show up to ruin my train ride.

I found it.

It was a Laistrygonian giant. I could see the mist working its magic and causing it to look like a troll to any observers. Which I guess solved the question on if regular wizards could see through the mist.

I pulled out my sword and my shield and charged.

The giant spotted me and immediately threw a cannonball at me, which I deflected with my shield, launching me backward.

Ow.

I picked myself up and decided that a head-on approach was probably a bad idea.

Then I remembered that I can control the mist. If I could make the giant think I was somewhere I wasn't and that I wasn't where I was (Try saying that three times fast) then I could maybe sneak around and attack him from behind.

I created an illusion and used the shadow of the train to hide me. I started sneaking behind him while the mist version of me started talking.

"Hey! Is that the best you can do?"

The Laistrygonian giant roared at the illusion form of me, "Of course not! I'm just getting started!" He threw three cannonballs in rapid succession.

Luckily, I had time to get behind him, so I didn't even pretend to have the illusion look hurt. I just jumped and swung my sword at his neck.

As you can imagine, he was much more pleasant without his head.

I put my weapons away as I remembered why shadow travel or just Umbrakinesis in general was a bad idea, it took a lot of energy. Now that my adrenaline was gone, I was only seconds away from passing out.

I stumbled forward and managed to get to the door of the train that the seventh years had been guarding.

I stepped onto the train and the world went black.

My eyes popped open at the feeling of someone shaking me. Who was that?

I sat up and looked around, my eyes finally resting on a blonde girl who looked around my age. We were alone, that was good, less witnesses. The girl said something, but I had a hard time figuring out what it was. "Sorry, what was that?"

"I asked if you were alright. You walked from your compartment and just passed out."

Thank the gods for the Mist. She hadn't seen me get on the train, "Oh! Yeah, I'm fine, I'm just... hypoglycemic! I'll be fine after I eat a piece of amb- brownie, that's in my pocket."

I reached into my pocket and pulled out my baggie with ambrosia in it, smiling as if that was proof.

I took a bite and immediately felt better.

I stood and started to walk back in the direction of my compartment, "Thanks! I'm going to just go back to my compartment, now."

That had been my intention, but this girl seemed to have other plans, "Can I at least get your name in case something happens again?"

"Isabella Porter."

"I'm Carol Ramos."

"Nice to meet you, now I should be going."

I walked back to my compartment. The door was closed, as I had left it, but being the magic person I was, I could sense that someone else had been in there. I opened the door, and there was no one.

But there had been someone.

Then the train turned the corner and I saw something that made me forget all about people sneaking in my compartment.

I saw Hogwarts school of Witchcraft and Wizardry for the first time. And all I could do was stare. It was amazing. I knew I would like it here.

Chapter 4 everyone! Remember, you can still submit OC's even if you've done it before! And if you haven't yet, even better! You could literally randomize everything about the questions and still end up with a character I can use, so please do it!

Y'all want to play a game? Comment what you think MY Hogwarts house is, not Isabella's. You don't have to, but I think it would be fun! The first person to get it right will get a special shoutout and in that same chapter, I'll post another question! comment away!

Thanks for reading!