A/N I don't own any characters in the PJATO and HOO series; that's Rick Riordan's job

Percy has a twin, Perci, and Thalia and Jason are twins. I don't know if they really are in the books, but in my story, they are. Also, my story may not follow the same timeline as in the books. The four of them are 17, are all born on August 18, and have been separated from birth by which form helped give birth to them, meaning whether the Greek or Roman form gave birth to them. Percy and Thalia have known each other since birth and Thalia stayed at Percy's home when her mother died. Perci and Jason have known each other since birth, stayed near each other during their childhood, and when Jason's guardian died, he stayed with Perci. Also, Selena Beauregard (is that how its spelt?), Charles Beckendorf, and Bianca DiAngelo are in their second life.

This is what they think; this is what they say

Chapter 1

Third Person POV

It was a year after Gaea had been was a year since Sally Jackson, Paul Blofis, and their unborn children died in a freak flood. It has been a year since everyone It was a year since Thalia Grace quit the Hunters of Artemis. It was a year since Jason started dating Piper, and a year since Percy started dating Annabeth. It has been a year since the Olympian Council (A/N Hades and Hestia have joined the Olympian council) decreed a change in Camp acceptance: Camp Half-Blood would train heroes from 13 years of age until they want to settle down; Camp Jupiter would be a type of sanctuary for demigods who want to settle down and their kids.

It was a regular first day of Camp Half Blood (CHB) for young Perseus Jackson, Perseia Jackson, Jason Grace, and Thalia Grace. All of them had just finished their junior year at Goode High School. Perseia, or Perci, and Jason have been in the Camp Jupiter for most of their camp life. Perci was part of the Amazons, but quit to spend time with her brother, Percy. Thalia was part of the Hunters of Artemis, but once she heard that her brother, Jason, was coming to stay at CHB, she quit the Hunters to spend more time with her brother.

As they entered CHB, the twins decided to separate, the Jackson would go to Cabin 3, Poseidon's, and the Graces would go to Cabin 1, Zeus's. After everyone was settled, they met up again to go see their friends, Annabeth, Grover, Tyson, Leo, Piper, and Reyna. Perci and Thalia go to the forges to talk to Tyson and Leo while Percy and Jason go the spot on the beach where they agreed to meet up with Annabeth and Piper for a double date. But then they stop in their tracks, when they hear their girlfriends talking to the new, big-headed siblings of the twins. Percy and Jason went around them and hid behind the trees that were behind their respective girlfriends, and saw that they were cheating on Percy and Jason with their new male siblings.

Percy POV

"Annabeth," said Mark, my new hot-headed sibling. He thinks that he's all that just because he beat a hydra and found a new camper while I was at school. "When are you gonna break up with him?"

What? Thought Percy Why does she want to break up with me?

"Oh Mark," said Annabeth, "You're so much better then Percy. I'm not sure why I agreed to out with him in the first place. He's so controlling and doesn't listen at all."

"I don't see the problem," said Mark. "All you have to do is go up to him and tell him its over, and then we can spend as much time as we want!"

"It's just so hard," said Annabeth, "It's just that I don't wanna break his heart. I mean he's already gone through so much, what with his mom, stepdad, and his unborn siblings dying in that freak flood. You know what, I'm gonna tell him as soon as he comes. You better leave now though, he's coming today and we agreed to have a double date here with Piper and Jason."

"But," retorted Mark, "She's just over there with that new Zeus kid, Jake Ayrs."

Wait, what? Thought Percy I hope Jason doesn't do anything problematic to Piper

" You know what," said Mark, "I don't wanna know. See you, beautiful."

"No," said Percy and Jason, surprising Annabeth Mark, Piper, and Jake.

"Why?" asked Percy, "Why are you doing this? I've noticed that we've been going farther and farther apart, but I thought we could work it out when I got to camp."

"Percy," said Annabeth, "It's not what you—"

I cut her off by saying, "Annabeth, I heard what you said about me being controlling and not listening. Sure, I don't want other guys to hit on you, but I try not to be controlling; and I also try to do what you say. I knew you were a child of Athena, but after what I heard and saw, I'm starting to doubt that."

I started to leave, when Mark yelled, "Hey!"

I turn around just fast enough to get punched in the nose. As I regained my composure, I saw the tides getting higher and more deadly. I tried unsuccessfully tried calming down, and said, "Mark, don't you say a word! You knew I was dating her, and yet like the hotheaded little moron you are, I geuss you couldn't stand not having her!"

After that I punched him in the nose, saw Jason doing the same thing to Jake, and we both started walking back to our cabins. I started crying as soon as I went on my bed, and cried right through dinner, I wasn't hungry anyway, and soon, I cried myself to sleep, but not before seeing my sister come in and look at me all worried.

Jason's POV (starting when they hid behind the trees)

I hid behind the tree, and saw my Piper, my beautiful Piper, on the laps of my hot-headed sibling, Jake. The little moron thinks so highly of himself just because he went on a quest with a few other newbies, killed a Hydra, and brought back a camper.

"Piper," said Jake, "when are you going to break up with that good-for-nothing excuse for a child of Zeus?"

Good-for-nothing! I thought Where were you when I beat Krios during the Second Titan War? Huh?

"Jake," said Piper, "You know that I'm not usually one for breaking people's hearts, but for you, I'll gladly dump Jason."

"Good," said the wretched beast, "Now I gotta go before Vicky starts worrying about me."

"Vicky?" said a confused Piper. "Is she the same Vicky you guys rescued on you quest to kill the Hydra?"

Gods, she's cute when she's confused I thought Uh! You're girlfriends cheating on you in front of you're eyes, and you can only focus on her cuteness? Pathetic! If Lupa was here, then she'd have me do the initiation again! Gods, that was terrible. Oh wait, he getting up.

"Anyways," said Jake, "I gotta go, remember to break up with him later, kay?"

"No," surprisingly, me and Percy said together, and we startled Piper, Jake, Annabeth, and that new Poseidon's kid, Mark.

"Piper, why?" I asked. "Why? What, am I not good enough for you? I thought you were different than other Venus children, but now I know that you're as bad as Drew."

I turned around and heard Piper charmspeak, "I am different!"

"Don't fool yourself," I said, "when you're mom heard we were dating, she gave me a ring that prevents me from being affected from charmspeak. And besides, how are you different from Drew anyway. When she was the cabin leader, she had everyone go around breaking hearts, and here you are breaking mine!"

"Hey!" said Jake. I totally forgot the little bastard is still here. "Don't talk to my Piper like that!"

And with that, I got punched in the nose as soon as I turned around. Gods, why did I turn around?

Now, I was mad. It was then that I notice the sky darken and lightning flash in the background.

"YOU!" they flinched when I said that, "Don't you dare say another word! You're the one who came here all hotheaded after killing a stupid Hydra, and then you start thinking you can get whoever you want?"

With that I punched him square in the nose, and started walking back to my cabin. It wasn't until I left the forest that I noticed Percy next to me, and boy was he steaming. I then proceeded to my cabin, and started crying. I never cried before, not in public anyway, because Lupa always said that crying is for the weak.

Well, I thought, Right now I am weak, and I don't care who sees it, as long as I don't see Jake or Piper

I cried right through dinner, I wasn't hungry anyway, and I soon cried myself to sleep. But not before seeing Thalia coming in looking at me all worried.

Third Person POV

The whole camp was abuzz with rumors about how Percy and Jason had ganged up on Annabeth and Piper, and started yelling at them. Soon, no one remembered them, and to make things worse, Mark, Jake, and these new Poseidon and Zeus campers, Vicky and Alli, became camp heroes. Only Chiron, Nico, Hestia, Artemis, Grover, and Tyson talked to them, but they could only stayed for long, as each had duties to attend to.

Two weeks later, Percy and Jason had enough of this and decided to leave camp, only telling their sisters, who joined them, and Nico. The two twins made him swear on the Styx not to tell anyone about their disappearance until the others found out by themselves.

Two weeks after they left, Chaos came onto Earth looking for heroes to become his personal assassins. He came across the Jacksons and Graces in an alleyway, the boys were all drunk, and the girls were barely able to cover themselves. Chaos then took them in, and they became his Elementals, because each had a power over the four elements that were present in most of the myths of the whole universe.

As such, Percy became Terranova, the Earth elemental; Perci became Aquos, the Water elemental; Jason becomes Ventos, the Air elemental; and Thalia became Electra, the electric elemental. They were each assigned their own sections, Terranova got the ground troops, who had complete control over the ground and helped out planets that was made mostly of land; Aquos got the water troops, or navy in some cases, who had complete control over the water and helped planets that was mostly water; Ventos got the air and space troops, and helped often more than not got the same planets as Aquos and had complete control over the air; and Electra got the electric troops, who have complete control over lightning, are just as fast when it comes to completing missions, more often than not help the ground troops, are experts at disguises, and archery. Terranova and Aquos became the Lower Elementals, while Electra and Ventos became the Upper elementals, and they were only called for missions on planets with revolutions that would be deadlier, longer, or costlier without them.