Percy Jackson/Twilight Crossover

Written in the stars.

Chapter 1

I do not own Twilight or Percy Jackson

"Come on Bella, we haven't had a birthday since Emmet in 1934, be a good sport will you? You're eighteen, which is a huge cause for celebration." Edward tried to persuade me. Keyword TRIED. This wasn't even my birthday, and for god's sake, I'm not even eighteen yet. I am fifteen, and my birthday is on 8th May. Okay, I know you're confused, so here it is. I am the twin sister of Percy Jackson, and daughter of the great god Poseidon. There was this prophesy created before we were born, stating that a child of one of the big three (Poseidon, Zeus and Hades) will lead Olympus to war with the Titans, and will ultimately decide the fate of Olympus. Oh, and a hero's soul cursed blade shall reap. Which means a demi-god hero, most likely Percy, will die by a cursed blade. Whoopee! He doesn't know this of course, so he can be manipulated, and I would tell him, but I swore on the Styx, and well, you know what happens. Shit goes down if you break that oath.

I entered the Cullen household, which was tastefully decorated, unless you were me or one of the Ares cabin members. Nothing screamed the god of war like pink roses. Sarcasm was intended. But when I saw Alice's face, I couldn't tell her the decorations were crap. As much as I thought she was a selfish cow, who needed to get her own way, the look on her face was just...ADORABLE! She looked just so cute standing their clutching a little gift box. What? I am a stickler for the cute face! And there was cake. Lots of cake, which anyone who knows me knows it is my weak spot.

"Happy Birthday Bella!" Alice cried, oblivious to my not-very-humorous approach to the fake situation.

"Thanks Alice" I replied, indignantly. I hate birthdays, they only mean my brother is just that little bit closer to death. And I get too much attention. I am not really the meek Bella Swan the Cullens know, I am Isabella Jackson, fierce, not clumsy (!), funny, smart and risky. Not meek and shy and so plain jane. The Mist has cloaked my true appearance, so any members of the Titan army will not recognise me. I have black, unruly hair, and sea green eyes, very thick lashes and I am at least 5" taller than the Mist makes me appear to be.

I was pulled out of my reverie by a small, timid knock on the door. "I'll get it love." Edward said to me, with his really annoying and belittling commanding tone that he uses with me, when I went to answer. A collective gasp escaped all of the Cullens when a lone figure literally fell through the doorway. The figure, I recognised, was my brother. Weak and bloody. Never a good combination. That instant of recognition was all it took to snap me into action.

"Esme, get him into a bath of salt water, temperature doesn't matter. Carlisle, get some sterile bandages, but don't you dare touch him!" I commanded whilst running to the car.

"Emmet, get Jasper out of here!" I added as an afterthought. I finished opening the car, thank the gods for ADHD, it made the job so much quicker. I slashed open the passenger seat and took out my emergency supply of nectar and ambrosia. The little ambrosia pieces were shaped like Dionysus, meaning grape flavour. Yummy. I ran back to the house, and into the bathroom, where Percy was wallowing in salt water. The cuts still looked pretty bad. I fed him some ambrosia, and washed his wounds with nectar. Next, I wrapped them in the bandages which Carlisle had left by the tub.

"Bellsy?" Percy asked.

"Don't talk, you're still weak." I told him. He looked sickly pale, and he had huge circles under his eyes. He was covered in dirt, and his hair was messy. He had obviously been through a lot.

"Screw being weak, I came here to tell you, Camp needs you. We need to train new heroes, and I am worried about you. You need more training too. The storm is coming Bella, and it won't be long before she breaks. We need to prepare." Percy stated. Really creepy actually, he sounded so, wise. He is so high. I mean, seaweed brain, being wise?

"Are you high? When have you ever been wise? What happened to 'Hi Bella, I missed you, oh yeah, we have a tidal wave of new campers that need training, can I pretty please have your help? I will do all he chores for a week if you do'? Huh? Do you know what went through my mind when you fell through that door? And what the Hades happened to Iris messaging? You are so lucky you're nearly dead Percy, or you would really be going to the Underworld the easy way!" I took a deep breath. He is so lucky he's my brother and the child of the Prophesy, or he would be so dead right now.

"Bella, who's that penny head behind you? He looks murderous, like freaky, worse than Grover when he runs out of tin cans." Percy questioned.

I turned, and saw Edweird looking like someone ran over his cat. "Bella, who is this heathen, why are you fussing over him like you care. He is a tramp who needs to kicked back onto the street where he belongs. Seriously Bella, get some sense." Edward said to me, like the pompous bastard that he is.

"If he is a tramp, then I am too. He is my brother, and if you so much as think another disrespectful thought about the guy who is gonna save your sorry ass, then I will personally kill you." I accompanied this death threat with my deluxe 'you are so dead' stare. He flinched. I haven't lost my touch then, if I can make the big bad vampire visibly flinch, then it's a good day for me.

"Bella, who is this?" Carlisle asked, looking is Percy's non-existent wounds.

"This is my twin brother Percy, and we are the children of Poseidon, and we are here to get you onto the side of the Olympians for the biggest demi-god war in a thousand years. So are you with us or not?"