This is extremely short, I know. Eh, whatever. I just want to say something: If the gods don't have genetics, then two children from the same cabin can't be really related unless their mortal parents' are related. So basically, Miri and Nico AREN'T GENETICALLY RELATED. Get what I'm saying?
That's my theory... though most of my theories barely make any sense.

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Chapter Two- She's a Better Ass-Kicker

Nico's POV

The next morning, I woke up by rays of sunlight in my eyes, coming from the window.

Wait a minute… there aren't any windows in my cabin!

My eyes shot open and I practically jumped out of bed, coming almost nose to nose with… Miri.

Oh, right. I have a roommate now. I forgot.

"You're cute when you're asleep." She commented, looking at me up and down. I blushed, because… 1) I was only in my black boxers, and 2) She just called me cute.

I shook my head, trying to clear my thoughts. I do NOT have a crush on my half sister. I do NOT!

My eyes roamed the room, trying to find the source of the unexpected sunlight. Then I spotted it—a hole in the wall, with a chunk of the cabin lying on the floor near it.

"What did you do?!" I yelped. Miri simply shrugged. "I thought there should be some light in the cabin. Sure, the darkness is awesome; but gods, I don't like reading in the dark, even with those weird torch-lamps!"

I glared at her. "Are you sure you're Hades' daughter?"

Miri looked offended. "Of course I am! I even talked to Daddy yesterday. He said, 'Nico's the densest mortal I know. You must be very straightforward with your brother.'"

Thanks, Dad.

I scowled and turned to my ghost servants. "Why didn't you stop her from creating that hole in the wall?"

They bowed, and one ghost said, "You are our master, and she is our mistress. She has control over us, too."

Miri gave me an I-told-you-so smile. I scowled again and looked at her. She was already dressed, wearing her camp T-shirt with a dark hoodie, black skinny jeans, and beat-up black high-tops. Her hair was brushed out, and she had on some eyeliner. No mascara, eye shadow, lip gloss or other stuff.

Just eyeliner.

Me? I was still only in my boxers.

"Come on, shirtless." Miri grinned. "Get dressed; it's time to go down to breakfast."

……………………………………………..

I sat with Miri at the Hades table during breakfast. It felt good to be with someone, to not be alone for once. And Miri was a big talker. Soon I knew all about her life: She lives with her mom in northeast New Jersey, she has lots of friends, and she was taken to Camp Half-Blood by the Stoll twins after she successfully got rid of an empuosa that almost killed all her guy friends. She's thirteen years old, like me, although technically I'm much older.

"Miri," I asked her as she stopped talking to eat her cereal, "How did you manage to make that hole in our cabin?"

Miri swallowed her food and pulled something out of her pocket. It was a shiny, fancy black fountain pen with Miri etched on the side in neon green. I stared at it for a long time before I realized what it actually was.

"Dad liked the idea of Percy's sword, Riptide, so…" She shrugged. I was silent.

"It's so unoriginal, but it's awesome. And it's made of Stygian iron. It doesn't have a name, though."

Miri clicked the fountain pen, and it transformed into a huge black sword that was very much like mine.

"Yours is like this, right? Stygian and totally black?"She asked.

Yeah, but it's not an awesome pen, I thought, jealous. Why didn't Dad give me one?

I pulled out my sword. "Yup, here it is." I replied.

"Cool!" Miri rubbed the bottom of the hilt of her sword, and it turned back into a pen.

I sheathed mine, feeling kind of not unique.

"Let's go." I said, tugging on Miri's arm.

During one-on-one combat in sword practicing, I was paired up with… who else? My half sister.

"I'll go easy on you, don't worry," I promised her. Miri rolled her eyes and clicked her pen, which caused Percy (who was fighting Annabeth) to raise his eyebrows. "Nice weapon." He said, ducking as Annabeth's dagger went for his head. If the dagger had got him, it wouldn't have done any damage anyway, Percy being invincible and all.

I turned back to Miri, only to discover she was already lunging toward me!

"AHHHH!" I yelled, and jumped out of the way. I unsheathed my sword and ran forward.

CLANK! The sound of our swords meeting at the middle was loud enough for a few of the younger campers to jump. A few black sparks actually flew.

I let go and aimed down, near Miri's armored stomach, while ducking quickly. But Miri was fast, and almost flew out of the way, got behind me, and pushed me down by the back. I tasted defeat as the point of her sword touched my neck lightly, sending chills down my spine.

Then the sword was gone, and I rolled over.

A few people laughed at me, because I had been defeated by the new girl… who was also my sister. I felt the blood rush up to my cheeks as the Ares cabin snickered loudly.

And then I saw a hand.

A slender, olive-toned hand with nails covered in black Sharpie. Miri was offering me her hand.

"Get up, Nico, you didn't lose yet." She grinned. "Want a rematch?"

I'm a corny person, so don't rip my head off later. Bye!- xscarredx13