Disclaimer: I do not own the Percy Jackson series, nor does my friend. (Who I'm writing this with).

I Have a New Sister

I ran to my cabin exited to finally be home, after eight months away I couldn't wait to be back, but cabin inspection was today and I had to clean up fast because without Tyson there my cabin was probably a lost cause. I stepped in to my cabin, but almost immediately fell back out. The cabin had a warm light filtering in, the light wasn't normal it made the cabin glow all the colors of the sea, I felt like I was in Poseidon's realm again. A fish swam up to me (yeah, I said a FISH!) and pecked at my nose, two extra beds were across the room obstructed by a shimmery green curtain. My bed neatly folded and all my clothes were put away. A girl about twelve was in a corner with her nose buried in a book. "Uhh..." I stammered dumbly

"Oh!" the girl cried out, jumping up. "Percy! You're finally here!" The girl rushed up and gave me a tight squeeze. She was short and only came up to my shoulder, she had shoulder length hair and hard bangs she wore a headband in the shape of an Omega and a brown t-shirt and brown leggings.

"Who... who"

"Yah know Poseidon wasn't kidding about the whole other children, I am Omega, last child of the Sea God Poseidon.

Turns Out, I Have Two

Another girl stepped in the room "Hey! Don't forget me!" she said huffily.

"Ah yes, this is my twin sister, Psi."

"But, if you... are her twin then why are you the last child?"

"I was born four minutes after her" I stated obviously. Percy, shocked fell back onto his bed and sat there for quite a while.

Training Starts

"Time for training!" I cheered happily about an hour later. I planned to push Percy into the woods and track to improve my skills.

"Huh?" Exclaimed Percy clearly confused. I was exited grinning at Psi mischievously. She grinned back in anticipation.

"We are going to be your trainers." Giving a bow with a hand flourish we dragged him out of the cabin into the bright sunlight. I sniffed Percy, just as I thought sea water and kelp. All children of Poseidon were supposed to smell like that, but Psi and I learned how to mask the smell. Confused Percy stammered.

"No time for yammering! Run and try to hide from us!" I said shoving him into the woods "We'll give you a head start!" I yelled after him. About five minutes later we headed after him. Psi looked at me expectantly as I sniffed the air for Percy's scent. Among the smells of pine and earth sea water stood out easily. I nodded at Psi and ran up to a tree, at the last second, I shove my blade into the tree and apologized a ton the tree nymph who lived in it. Yanking the blade out I flew up using my momentum. Psi followed close behind.

"We can follow him more easily without being spotted in the trees." I called back to Psi throwing myself at the next closest tree I grabbed a branch as I flew past. I swung my self up and called to Psi that it was sturdy and would hold both of us. Just to be clear, smelling the air isn't a Poseidon thing, it is just me, because I have a strong nose that can detect any smell. As we flew from branch to branch I planned how to ambush Percy. We finally found him. A small branch cracked below Psi's feet, I cringed. Percy looked up, before he could think I jumped from the branch I had been on thirty feet in the air I pulled a arrow with a string attached from the back from my pack and fired it whipped around Percy, he yelped in surprise. I fell to the ground, relaxing my knees as they hit the ground so not to injure myself. Percy gaped as the arrow whizzed around him tethering him to a tree. Percy struggled to get loose.

"I wouldn't try that if I were you." I commented. Psi let an arrow fly trapping him further.

"I'll get Annabeth and you watch Percy" I giggled to Psi. And Annabeth didn't think I was qualified I thought smugly to myself. I rushed off happily. I grabbed Annabeth by the arm and dragged her into the woods. Releasing an arrow, I said,

"Follow the string; it'll lead you to Percy."

We Show – Off

While Omega dragged Annabeth off to get Percy, I hid up in the trees. To clarify, I was still watching over Percy. It was pretty funny listening and looking while he struggled to remove himself from behind the arrows. Omega appeared and nudged me, pointing to the tree on the right. I smirked. Annabeth was walking out staring at Percy with an expression of shock, worry, and annoyance. We watched together as Annabeth snuck up behind Percy and poked him.

"GAHHH!" Percy yelped. Annabeth fell to the ground laughing. Omega and I were both having trouble silencing our giggles. "WHAT WAS THAT FOR?" he demanded. Annabeth was having trouble talking so we decided to intervene.

Jumping down, we landed in crouches startling both Percy and Annabeth.

"That, dear brother, was a challenge." I began seriously. "Which you failed." Annabeth was looking at me funny. "What?" I asked loudly.

"I thought Omega was Percy's only sister," she choked out. I grinned mischievously.

"Nope," I said cheerfully. "I'm Omega's older twin sister. Can't you see the family resemblance?" I asked sarcastically. Sarcasm is one of my specialties.

Annabeth blushed. Before she could say anything, I cut her off. "It's fine. I kinda like messing with people's heads." I turned to Omega.

"Training Arena?" I asked. She replied in the positive so we sauntered off, leaving two very disgruntled and confused (maybe even a little freaked out; I can be freaky and intimidating when I want to be) demigods behind.

Got You!

On our way to the training arena I grinned "This is going to be an fun summer, eh sis!" Hearing a noise behind me I jumped, cautiously, I turned around slowly.

"Did you hear that?" hissed Psi.

"Of course!" I replied trembling. We both reached for the charms in our pockets. I took out charm and whipped around, making sure to rub the charm in the direction facing away from me. I felt the blade extend in my hand and swung it deftly. After a second the blade formed as a wooden staff I launched myself behind my attacker and rapped it in the back. Psi meanwhile, kicked it in the face and swung around smacking it with the butt of her sword she knocked it over and planted her foot firmly on its chest I had my weapon (now a sword) pointed directly at the neck of... the unconscious form of Percy Jackson.

"Oops!" said Psi. In the next instant we had both bolted.