~Annabeth~

"I have a sibling. A demigod sibling."

I stared at him. I didn't think I would be out here, finding this out. I had only meant to come out of my cabin because I was feeling restless. I had wanted to go jogging, but then I had seen Percy sitting out at the beach. Before dawn. He always got up as late as possible.

Feeling worried, I had walked over, and was now hearing this.

"Like, a brother or sister?"

He sighed. I watched as he ran his fingers through his jet black hair, making it messier than before.

"A girl. A sister."

I swallowed, feeling my knees grow weak, as it hit me that there was yet another child of the 3 strongest gods. I tried to remain strong for him, though.

"H-how did you realize this?" I managed.

"I had a dream about it." he replied wearily.

My eyes widened. I asked:

"How old is she? What does she look like?-"

"I don't know, and from what I can tell, like her mom." he interrupted.

I wanted to ask what her mom looked like, but I could tell this was a touchy subject for him, so I didn't ask. After a moment of silence I said gently:

"C'mon Seaweed Brain."

He raised an eyebrow at me.

"Where?"

"Walking."

"Why?"

"Do I have to have a reason?" I asked him with annoyance. Sometimes he could be so irritating.

He stood up and we began to walk along the beach, holding hands in contented silence. I couldn't help but remember when we'd had our underwater kiss. Hard to believe it was over a year ago. Over a year of dating.

Wow. I thought.

After a little while, when I was sure he was calm enough, I asked:

"Is she Greek or Roman?"

Normally the answer would be obvious: Greek. But ever since Jason Grace, a Roman son of Zeus- or Jupiter, as the Romans called him, told me he was Thalia's-a Greek demigod-little sister, I couldn't be so sure.

He took a deep breath and said quietly:

"I think she's Roman."

I stared at him.

"So she's the daughter of Neptune?"

"Yup."

Once more a time of silence began. I was the first to break it by asking:

"Are you OK, Seaweed Brain?" My voice was gently. "No pressure" is what I wanted to convey to him.

He hesitated, and I knew what he was thinking. Demigods were less likely to show weakness. You had to be strong at all times. The Greek half-bloods were more likely to do so than the Roman ones, but we still were bad at letting our feelings show.

"No I'm not." he admitted raggedly.

I felt sympathy wash over me. I was pretty much use to finding out I had tons of demigod siblings. It was routine, almost comforting, to know I had others like me. However, I understood that Percy was having a hard time accepting his dad had been with someone else. And that he had been in his Roman form while doing so. He had clearly thought, or hoped at least, that, besides Tyson, he was the only child of the sea god.

I turned him towards me and gave him a hug. I felt his strong arms wrap around me, and laid my head on his chest, enjoying the sound of his heart beat and his salty sea smell. When I pulled away, I asked:

"Do you want to know more about her."

He stood there in silence, and I began to wonder if he'd heard me.

"Percy?"

"Yeah, kind of." he seemed slightly startled.

"Then how's about we go find her?"

"What?! Annabeth, we can't-"

"Tommorrow at the camp fire we'll tell the camp about your dream. Then, we'll ask Chiron for a quest." I said, ignoring my boyfriend's protests.

"B-but this isn't quest-worthy!" he protested.

"Yes it is. After all, she is a demigod out in the mortal word. She is exposed to monsters. She needs to be brought here in order to be safe." I pointed out.

He sighed.

"We should get Jason to volunteer." I said.

"Why?" He asked me.

"Because he knows more about the Roman camp. He will be able to tell her more about the Romans then we can."

"Good point." Percy said, nodding. Even though we had started communicating with the Roman camp, we were far from experts about them.

"Well then, it's settled. We're going to find your sister."

Oooh! A plan has been formed!

How will this go? Stay tuned for next time to find out!

Reviews from Chapter 3:

wrenergade: Thanks! I am glad you enjoyed it! I hope you will continue to stick around!

Note: As usual, I DO NOT own Percy Jackson and the Olympians, or anything related to it. Same as Heroes of Olympus. All of this belongs to the incredibly talented Rick Riordan. I love his books and had to do a story about Percy and what would happen if he found out he had a sister. (Taking place after the two series)