Hey guys! This is my fourth story, and I hope you like it. I feel as if some parts are awkward, but I'm not really that used to writing sort of "fluff." There's a reason why my other stories were hurt/comfort. This actual story might be really long, and not every chapter is going to be a letter. It might be every few to several chapters. Sorry. I don't think I saw any other stories like this in the PJO fandom, so hopefully it's a bit unique. There's going to be really slow Percabeth, so don't expect them to get together after the first few chapters, or so. I doubt they'll even get together after 20. Like I said, this story is going to be long. I'll probably do shout-outs for this story, and there's going to be weekly updates. Without further ado, here's the story.

Disclaimer: I do not own Percy Jackson. Rick Riordan does.

Chapter One

(Annabeth's POV)

"HAPPY BIRTHDAY TO YOU!" The kids sang out, well, more like yelled. No matter how squeaky, loud, or horribly off-pitch it was, I couldn't help but smile. It was my fourteenth birthday, and my family threw me a, well, birthday party. It was located in my backyard, and all my friends were here. I couldn't be happier. Considering the fact that this might be the last time you see them for a while, a little pessimistic voice reasoned in my mind. No, I thought while pushing these negative thoughts out. Today was supposed to be a time of happiness, not despair.

"Are you one..." a little voice sang. He was the only one. Everyone started laughing. Travis looked around confusingly. "No?" He stated, though it sounded more like a question. "We're not doing that?" Thankfully, Katie saved him from his embarrassment.

"Are you two..." she continued, and pretty soon, everyone joined along.

"Are you three, are you four..." they continued like that until fourteen.

"Stop." I said, a tad bit awkwardly, and with a tad bit of a laugh.

"Are you fifteen?" Connor still persistently continued, until he was signaled to a stop, by one of Thalia's death glares. He cowered in fear. I couldn't blame him though, those things can be scary. Well, to others. I got used to them.

"Make a wish Birthday Girl." Percy told me.

"Don't you mean Wise Girl?" Silena teased.

"Oh, shut up." He retorted, only half-heartedly, with a bit of a blush on his cheeks. I laughed at his reaction, and he scowled at me. "You too, Wise Girl."

"Hey!" I protested. "It's my birthday. You should be kind to me."

"Fine." Percy relented. "But tomorrow, however, I can annoy and tease the Hades out of you." I sighed, he was right. Not that I would admit it to his face. "Now make a wish." I closed my eyes and thought quite hard, although, the answer came to me naturally. I took a deep breath, and blew out the candles. I made sure that I didn't accidentally spit on the beautifully decorated cake. Gods know, how much that annoys, angers, and, not to mention, disgusts me. Go place your saliva somewhere else, just not on the cake. Geez. People have to eat that too, you know.

"Yay!" Everyone cheered. I never really understood that concept, even though I do it too. Why are you praising such a small action that anyone can do? Oh well. The deed is appreciated enough. After the cheering died down, my dad handed me this huge knife. Yes, I am responsible enough to handle sharp objects. Some of my friends, however, I can't really say. I directed the knife towards a section of the cake, and smiled towards the cameras. After several photos, I was finally able to cut the cake. I cut a fairly large piece for myself (don't judge), and started cutting the pieces for the others. Percy got the second slice, and that's when the complaints started.

"Why does he get to have cake first?" Thalia protested.

"I thought I was your best friend." Connor pouted.

"No you're not." I claimed. "That would be Percy, Thalia and Grover. Besides, if I gave cake to anyone else, Percy would just steal that slice away, and/or, murder that person just to get that cake." I was only partly joking. Percy would do anything for cake.

"Torture, then kill. Gods Wise Girl, do you know me at all?" Percy teased.

I rolled my eyes. "Seaweed Brain." I muttered under my breath. After an agonizing ten or so minutes (sometimes ADHD really sucks), I finished cutting enough cake slices for everybody. There was about a quarter of cake left, but that's okay. It'll probably be gone by the time this party is over. I took a seat on one of the benches, all alone with my cake and I. Not just a minute later, I felt a presence take a seat next to me.

"This cake is soooo good." Percy claimed. "Thanks for having some blue on it too."

"I wouldn't have it otherwise." I told him. It was the truth, anyways. He took his finger, dipped it into my cake's icing, and then licked it.

"This is also soooo good. It isn't like those icky icings that are always on cakes and cupcakes."

"Here's a thought." I reasoned. "Why don't you eat your own cake?" He still had about half left.

"Food always tastes better when it's someone else's." I rolled my eyes. Nevertheless, I took my own finger and dipped it into his icing.

"This is soooo good." I mocked, but it was the truth. I started to take some more, and then he started protesting. "You want some?" I asked. He nodded eagerly, like a little puppy. "Here then. Have some." I took some icing onto my finger and then smeared it onto his face.

He wiped icing from his cheek, licked it (to which I looked at in disgust) and then he looked at me. "You just declared war, Wise Girl." He took some cake, and threw it at me. Some landed on my hair and face, but most fell down onto my lap.

"It's on." I declared. I took the plate which had his cake on it, and slammed it into his face. That pretty much put to an end our mini war. Once the plate fell, he looked at me, through cake stained eyes.

"You ruined perfectly good cake." He said, to which I shrugged. I wasn't a believer in wasting food, but he started it.

"There are extras." I told him. "You better get some before the Stolls, Nico, or Grover gets it." He practically sprinted towards the cake, still with some on his face. I laughed at his actions. Sometimes, Percy just acts like a five-year-old. I went to the washroom in my house, and washed away the cake. Percy was right, it was perfectly good cake. I walked back outside to where all my friends were sitting in a circle.

"Soo..." Grover drawled, once I took my seat between Thalia and Percy. "Present time?"

"Present time." I confirmed. Our little group then proceeded to walk towards this large table which consisted of all the presents. "Who wants to go first?"

"Ooh! Me!" Thalia exclaimed, while sticking her hand out in the air, as if she were in a classroom. She then handed me a flat, medium-sized package, with a greyish-blue colour, and a big silver bow on top. I gave her a smile in return.

"Wait." Travis interrupted me, from beginning to open the present. "Who do you think will give the best gift?" I shrugged.

"Me, obviously." Thalia boasted.

"Nuh-huh." Travis protested. "It will obviously be me! After all first is the worst." He grinned proudly at his remark.

"You want to go, Stoll?" Thalia growled.

"Hey guys?" I tried to get in between them, before a full blown-out war commenced. "How about we see once I actually open the presents?" I purposely put some emphasis on the last three words. They grumbled a response in return. I then started to carefully unwrap the wrapping paper, so that I can probably use it for something later. A gasp escaped from my mouth, as I looked at the now uncovered present, that lay before my eyes. It was a beautiful silver HP Pavilion laptop. I turned towards Thalia and gave her a bone-crushing hug.

"Thank you, thank you, thank you, thank you!" I squealed. "You shouldn't have spent so much money on me."

She waved it off, but I did notice her sending a smug look towards Travis, who glared at her in return. "It's fine. Besides, I don't know when I'll see you again. And also, I don't mind spending Zeus' money." I laughed against my will. Thalia absolutely detested her dad, because he doesn't give a care in the world about them, or anybody to be honest. There are a bunch of other reasons, but I won't bore you with all of them. On the plus side, however, he is filthy rich, and Thalia just loves spending his money, to get back at him.

"Who's next?" I asked. No one answered. I don't blame them. After Thalia's present, they probably thought that they couldn't compare. I sighed, I guess I'll just have to pick a random one. An extremely bright, golden yellow one caught my eye, so I picked that one.

"That's mine!" Silena exclaimed. I opened it to find a dark grey sweater, with an owl in the middle. There was also a little box, which contained the most beautiful owl earrings. I also noticed a gift card to some store I never heard of before, which I sort of ignored.

"Thank you." I told her. She beamed at me, in return.

The rest of the unwrapping of the presents went like that. Grover gave me a coupon to this enchilada place. When I gave him a questioning look, he just gave me a thumbs up. Thankfully, there was also a sketchbook, probably as a backup. Katie gave me this book about architecture, that I surprisingly never read yet. Juniper gave me a medium-sized stuffed grey owl. Travis and Connor gave me a 101-jokes book, and a suspicious can, that I will most likely never open. Beckendorf gave me this Swiss-army knife. Nico gave me an... oh my gods. He gave me this Canon video camera, that I always wanted. I was shocked that he would give me something so expensive. Maybe his reasoning was like Thalia's. They were cousins after all.

Finally, there was just a lone blue and green box, with a grey bow, that was left. I knew without a doubt that it was Percy's. As I started unwrapping it, I snuck a glance towards Percy. He was looking in my direction, with worried eyes. He is probably thinking that his present isn't good enough, compared to some of the others. I know that he comes from a relatively poor family, even if he is cousins with Thalia and Nico, but I didn't care. He could've just given me a piece of paper, with "Happy Birthday!" written on it, and I wouldn't have minded. Just as long as it came from him. Once I finally removed the wrapping, I saw two boxes. The first one was a beautifully decorated open box, with around twenty or so...letters and a USB inside it. With curiosity overwhelming me, I picked them up and read the writing on the front. I looked at all of them, and they all contained the same three words. They all started with, "Open This When..." and different topics underneath each of them. I carefully placed the letters back in the box, and engulfed Percy in a bone-crushing hug, probably worse than the one I gave to Thalia.

"Thank you." I whispered in his ear. "Thank you so much."

We were interrupted by a cough and Connor saying, "Knock it out lovebirds." With very red cheeks, Percy and I sat back down.

"What was it?" Silena asked. I just realized that they don't know what the letters read.

"It was a bunch of 'Open This When' letters." Everyone was shocked. With Percy's dyslexia and whatnot, that seems to be the last thing he would give.

"I would've written more, but you didn't exactly give me enough time. When I finish, I'll probably mail it to your home, or something." Percy rubbed the back of his neck, like he always does when he's nervous.

"I'm so jealous." Silena claimed, after a while. "I want one. Or several."

I stuck my tongue out at her. "Well, too bad."

"Hey Percy?" Travis said. "Want to write me some?"

"Not in a million years, Travis." Percy sighed.

"I'll wait." Travis still tried.

"Never going to happen."

"But you did it for Annabeth."

"She's different." Percy claimed. When I heard Percy say that, I felt special.

"Aww." Silena cooed.

"In what sense, Percy?" Connor teased, while waggling his eyebrows.

"She's my best friend." Percy reasoned.

"What about me?" Grover pouted.

"Fine. One of my best friends." Grover seemed satisfied with that answer.

"What do the letters say?" Katie asked, trying to direct the conversation somewhere else. Thankfully, it worked.

"Well, there's 'Open This When...You Get These Letters,' 'Open This When...You Move in to San Francisco-'" I was cut off by Silena.

"Wait, you're moving!" She shrieked.

"Yeah." I replied sheepishly. "I was going to tell you guys when the party is almost done. The only people who knew were Percy, Thalia, and Grover. Sorry." Silena enveloped me in a huge bear hug, and pretty soon, all my friends joined in.

"When? And for how long?" I heard Silena's voice crack with emotion.

"In two weeks. I'll only be there for a year. Once you guys are in the tenth grade, I'll be back before you know it. It'll seem as if nothing had changed." I told them.

"A lot can change in a year." Percy whispered. I never noticed that he was just beside me.

"I won't change." I tried to reason.

"Change is inevitable." I gave him a watery smile.

"Since when were you so philosophical?" I asked. He just shrugged.

"I'm a poet, and I don't even know it." Despite the dire circumstances, I managed a smile. "We'll get through this. That's why I gave you those letters. So that it'll feel as if I'm right there with you. Besides, we can always call, Skype, text, and etc. We won't lose touch." I was about to reply, but Thalia cut me off.

"Sorry for interrupting your little moment, but there are other people here too, you know." Percy and I blushed. That meant that everyone heard our conversation.

"Wait!" Percy suddenly exclaimed, once we broke out of our hug. "There's still a part two to your present." I was so wrapped up in the moment, that I forget about the other box. I hastily walked over to the present, that lay discarded on the floor. I reached for the second box underneath the first one, and opened it up. For the second time that day, Percy had me in shock. Inside lay a photo album, with yet another box on top.

"Seriously Percy?" I questioned. "Another box?" He just shrugged, and gave me a sheepish smile.

"Just open it. I hope you like it." He said. I opened it up to find the most beautiful silver necklace with a little owl pendant on it.

"Oh my gods Percy." I breathed. "It's beautiful." I wrapped him up in yet another hug.

"So you like it?" He asked. Is that even a question?

"I don't like it." I replied. He looked crestfallen for a second, to which I mentally rolled my eyes. Did he just not hear me saying it was beautiful? "I love it."

His whole face lit up. "Really?"

"Yes, really." I handed him the necklace. "Now put it on me, you dork."

"Yes ma'am." He mockingly saluted. He put the necklace around my neck, and I tried to suppress the shivers and blush that was threatening to come out, when I felt his fingers and breath on my skin. Once he finished, I fingered the necklace. That was when I was hit with a question.

"Percy, how much did this cost?" I asked. He looked down. "How much?" I accused.

"Not that much." He answered. I gave him a pointed look. "Honestly. Maybe like $50 or so." I resumed giving him now narrowed eyes. He put his hands up in surrender. "Okay, fine. Maybe a $100, $200, $500, tops."

"Percy." I growled.

"What?" He replied, feigning innocence.

"I don't want you spending that much money on me. Especially considering the fact that you could use it for you and your family." I told him.

"It's okay, Wise Girl. My mom was all for the idea. Besides, you're lucky that I didn't get one of the more expensive ones." He tried to reason. I was about to remark, but he cut me off. "If you don't want it, I can't really return it, so..." I sighed, but that doesn't mean I wasn't angry.

"I will get you back." I warned. He just smiled at me. Gods, the nerve of that kid.

"I'll be waiting for that day." With one final glare, I turned back around to face my friends. Their jaws went slack. Whoops, I guess they never saw my necklace until now.

"Oh. My. Gods." Silena said slowly. That was pretty much my reaction. "It'll go great with the owl earrings I got you."

"It's beautiful." Katie gasped. Juniper nodded in agreement.

"Percy." Travis whined. "Seriously, why?"

"I wanted to make Annabeth's birthday special." Percy bluntly replied.

"Aww." Silena cooed once more.

"How about we look at that photo album now?" I asked, trying to change the subject.

"There's a photo album, too?" Thalia said shocked. I nodded. I got out the album, and all my friends crowded around me. Percy, somehow, got seated next to me. I flipped through the pages, and they all consisted of my friends and I, but the majority were of Percy and I. As I got to about halfway through, every page after was empty.

"Yeah, about that." Percy rubbed his neck. "I thought that you could fill the rest of the album with pictures of the friends you will make in California. So that, you know, when you grow up, you can look back at all the memories, and stuff."

He was about to say more, but I cut him off. "Percy?"

"Yeah." He replied.

"You're rambling." He blushed, and I laughed. But, nevertheless, wrapped my arms around his neck, and hugged him tight. "Thank you." I whispered. "For everything." Percy put his arms around my waist, and hugged me back.

"Only the best for my Wise Girl."

I looked at him, and raised an eyebrow. "Your Wise Girl?" I questioned. I tried to ignore the fact that our faces were just inches apart.

"Yeah. You got a problem with that?"

I laughed. "Nope. You're just getting a bit territorial, Seaweed Brain." He chuckled, but still had a faint blush on his cheeks. "Besides," I whispered. "You're my Seaweed Brain, too."

"Forever and always." He concluded.

"As long as we're together." I replied. "We can get through anything." We were interrupted from our little heart-to-heart by Thalia.

"Aww. You guys are so cute, I am going to cry." She then proceeded to wipe a fake tear from her eye.

"Percabeth!" Silena squealed.

"What?" Percy and I asked, at the same time.

"You're even talking at the same time. How adorable." Grover stated.

"Wait. What's 'Percabeth?'" Percy put little air quotes when he said Percabeth.

"Only you and Annabeth's ship name of course." Connor explained.

"I ship it!" Silena shrieked.

"Don't we all?" Travis muttered. "Hey guys?" He asked. We all turned to him, effectively cutting off any other conversation on the topic of "Percabeth." I couldn't be ever more thankful. "I think Percy gave the best gift." I rolled my eyes, but silently agreed.

Thankfully, Nico replied for me. "No duh."

I hope you liked it! I know that necklaces don't usually cost that much, but I wanted Percy to get her something expensive. You may review or PM me any suggestions on Open This When... Topics. Even if I already thought of that idea, I'll still give you a shout-out. I'm not forcing you to review, though. Once again, sorry for any awkwardness, and the bipolar-ness.