Crystal's P.O.V.

I collapsed after the fighting. I was exhausted. Fighting Cyclopes is harder than it looks. Mysti spoke up and said ,"Crystal? It looks like were alone." I looked around and realized we were alone. Leo, Percy, and Annabeth were gone. Here one minute, gone the next. "What do we do now?" I said.
"I have no idea."
We decided to go to our dorm. We laid down on the beds and fell asleep instantly. Of course, I had the same dream I've been having for two weeks. Ever since Leo, Percy, and Annabeth showed up. The dream went like this... I was standing in the middle of the ocean (that's right, STANDING, I was on top of the water) and three beautiful horse/fish creatures. They neighed and I got onto their backs. We sped off into the ocean and then suddenly, we stopped. The horse/fish creatures went underwater and brought us down to an underwater palace. The palace was amazing! We went over to the gates and waited there. After about a minute a giant glowing trident appeared in front of me, rose up, and disappeared in a burst of light. Then, as it is every night, I woke up. What didn't happen every night, was me waking up to Mysti staring in awe at me. "What are you staring at?" I asked Mysti. "Your..your glowing!"
I looked at myself in the mirror, and I was glowing! I was glowing a beautiful color of blue/green, and the trident I saw in my dream was glowing above me. I screamed. "Come on Crystal, let's go," Mysti said after the glowing went away. "Where are we going?"
"We're going to the cafeteria to look for Leo, Annabeth, and Percy."

Percy's P.O.V.

That was a lot to take in. Two new sisters? It turns out Poseidon wasn't joking about claiming more children of his. Of course, he couldn't let me take this in and let me think for a little bit, he had to add on to it. "Percy," he said, "I want you to watch out for them. You know, make sure they aren't killed by monsters and stuff, and be a good big brother." He winked and then suddenly Leo, Annabeth, and I found ourselves back in the school cafeteria. It was completely empty. No sign of Crystal or Mysti. "Shh," Annabeth said, "do you hear that?"
And I did. Two sets of footsteps running down the hallway toward the cafeteria. I instinctly pulled out Riptide, but the footsteps belonged to Crystal and Mysti, who both had looks of fear on their faces. "Where did you guys go?" Crystal asked. "Never mind. We need your help." "What happened?" Asked Leo, "and where did all the Cyclopes go?" "We killed them all."said Mysti. "What? How?" Leo started. "Leo, shut up," Annabeth said, "they said the needed our help."
"Yeah," Mysti said "you see, Crystal was kind of glowing, and there was this fork- looking thing above her head. "
I realized that Crystal had just been claimed by Poseidon. Why did he need to do that? He just told us! And why didn't Mysti get claimed?
"Can we explain later?" I said "once we get to camp?"
"Sure" they said.
"Does that mean your coming with us?" Annabeth asked.
"Yeah" Mysti said.
"Great!" Leo said.
"Okay everyone, get in the van." I said.
We went outside to the camp van and got inside. I drove us to the entrance of camp and got out of the car. Everyone followed and soon we were walking towards the Big House. When we got close Chiron came out and said "Your back early. I'm guessing this is Crystal and Mysti?"
"Yes." The twins said.
"Good. Do you understand who you are now?"
"Uh.." Crystal said, "Annabeth said something about... Greek gods?"
"Percy?" Chiron asked "Have they been claimed yet?"
"Yeah. By Poseidon."
"Poseidon?!" Chiron said (really loud if you ask me), "Three children of the Big Three and Leo and Annabeth, five demigods, were you attacked by monsters?"
"Yeah," Leo said "but Crystal and Mysti totally took out 12 Cyclopes on their own. They were all like 'pew pew pew dieeeeee you'!
You know, while we were busy being abducted by the gods."
"Oh my gods, Leo," said Annabeth, shaking her head, "did you even see the fight?"
"No..."
Annabeth sighed.
"Anyway," I said, "Poseidon did kind of..abduct us, he flashed us into the throne room on Olympus and sort of claimed them."
"Can we say something?" Mysti asked.
Chiron answered "Of course."
"Were so confused right now."
"Percy weren't you supposed to explain to them?" Annabeth said.
"When did we vote that I had to explain?"
"Because your their brother."
"OMG Percy's our brother?" Crystal screamed.
"Uh, yeah" I said, "well, half brother."
"Well that's one-half-brother more than we have now!" Mysti said.
Everyone except Chiron started laughing.
Interrupting the laughter, Chiron said "Okay, Percy do you want to explain to your sisters?"
That's when the same blue light and trident that appeared above Crystal appeared above Mysti. "Umm can someone tell me why I'm glowing?" Mysti said, she sounded like at any second she would scream if someone didn't stop her glowing.
"I don't know," Chiron said "usually when a demigod is claimed they don't glow.." After a few seconds of silence the glowing around Mysti stopped and the trident disappeared. Just then Frank,Hazel,Nico, Jason, and Piper came running to the big house. "Chiron!" Piper said, "Poseidon's here. By the beach. "
"Question?" Crystal said, "Is that your dad Percy?"
"Yes" I said.
"So it's our dad too?"
"Yes"
"So we can see him?"
"Yes"
"Then what are we waiting for?"
"Umm"
"Come on!"
Those girls are stronger than they look. They literally dragged me to the beach and while I was being dragged I could hear the rest of them laughing their heads off. I made a mental note to ask Connor and Travis to help me prank them later. Soon we were at the beach, and there was Poseidon. Crystal and Mysti stopped running and pushed me in front of them. I went up to my dad and said "Hey dad."

Crystal's P.O.V.

Poseidon turned around to see us and said "Hi Percy." He peeked around Percy and saw us, then said "Don't be shy, I am your dad you know. " Mysti and I walked over next to Percy and stood there waiting. "So.." Poseidon, or our dad, said, "who wants to see my underwater palace?" "Me!" Mysti said. "Me too, but if it's underwater, how are we supposed to breathe?"
Poseidon chuckled. "Girls, you can breathe underwater! Have you ever tried?"
"No" we said.
"Well then, it's time to try!" Poseidon and Percy dived into the water and stayed under for a long time. Mysti looked at me, shrugged, and dived in. I followed her. I held my breath as long as I could then when I couldn't take it anymore, I breathed in. It felt weird changing from breathing in air to breathing in water, but I was breathing perfectly fine. We swam deeper and deeper and finally we got to the place I had been seeing in my dreams. The palace.