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The Tide Between Us

Summary:

When an unclaimed demigod with a strange connection to the sea arrives at Camp Half-Blood, Percy is the first to offer help, because that’s just who he is.

Annabeth trusts him. She does.
She just doesn’t trust the way the new girl looks at him.

As camp life continues and tensions rise, Percy finds himself pulled in too many directions at once, until one moment of self-sacrifice reminds everyone how much he carries for the people he cares about.

A story about loyalty, jealousy, friendship, and the quiet ways love shows itself.

Notes:

Okay I know I shouldnt be starting a new story when I havent finished my last ones. A lot of life happened in the few months Ive been gone and right now those stories are hard to get back into because its bringing back a lot bad memories from a few months ago. I WILL be continuing those stories, but my heart was being pulled into starting a new story in my new era <3 I hope im not just rambling and you guys understand and can give me patience.

with love, Storm.

Chapter 1: The Girl Who Smelt Like Saltwater

Chapter Text

Percy

Camp Half-Blood had a way of pretending nothing had ever tried to destroy it, as if the strawberry fields and the cabins could simply outshine the fact that the world kept ending and restarting like a bad song stuck on repeat. On mornings like this, though, Percy almost believed the illusion, because the air smelled like sun-warmed pine needles and syrup from the dining pavilion, because the lake sparkled through the trees like someone had spilled a jar of glitter, and because everywhere he looked, people were doing normal camp things instead of sharpening blades for a war they couldn’t name yet.

The arena was loud with the familiar, satisfying noise of practice, bronze blades ringing against each other in clean, bright clashes, and the Ares kids were being aggressively Ares about it, shouting like volume counted as technique. Farther down, a cluster of Apollo campers sat in the shade of the amphitheater, instruments out, arguing about tempo and whether a song about “tragic heroic suffering” was too much for breakfast. A pair of Demeter kids walked past with a crate of strawberries balanced between them, pretending not to hear the harpies complaining about crumbs near the Big House steps, while a naiad in the creek scolded two younger campers for splashing too close to her lilies.

It was busy in that effortless way Camp Half-Blood got when everyone was alive, when nobody was missing, when the air didn’t feel like it was holding its breath.

Percy tried to relax into it, which should’ve been easy because Annabeth was beside him, and when Annabeth was beside him, Percy’s brain usually stopped doing its special talent of imagining catastrophic possibilities. She had her notebook tucked under her arm, because of course she did, and she walked with that familiar, purposeful stride that made him think of maps and plans and the way she always seemed to know where she was going even when the world wasn’t sure yet.

“You’ve been staring at the ocean for like ten minutes,” Annabeth said, glancing at him from beneath her cap, and there was that faint curve in her mouth that meant she was teasing but also paying attention, because she always paid attention to him in the way that made him feel both seen and slightly called out. “If you’re waiting for it to wave back, I’m pretty sure you already have that covered.”

Percy let out a laugh that was mostly a sigh, because it was hard to explain the feeling in his chest without sounding like a person who talked to bodies of water for fun, which—okay, he did, but still. “It’s just… off,” he admitted, and he tried to keep it casual, tried to make it sound like a weird intuition rather than the ocean tugging at his ribs like it wanted him to look. “Not monster-off. Just… distracted.”

Annabeth studied him the way she studied blueprints, as if she could line up his expression with a dozen tiny details until she found the exact piece that didn’t fit. “You’re projecting,” she said, but her tone was soft enough that it didn’t feel like dismissal, more like a gentle attempt to keep him grounded.

“Maybe,” Percy allowed, because he loved her too much to argue about a feeling he couldn’t prove, and because the truth was he didn’t want to ruin a quiet day with the kind of anxiety that had built a permanent home in all of them after everything they’d survived.

They crossed the path between the cabins, and Percy caught the usual camp-life snapshots like they were postcards someone kept shoving into his hands: Leo, half under the Argo II’s shadow, yelling at a piece of machinery like it had insulted his mother. Even some of their Roman friends were visiting. Jason was tossing a small dagger between his fingers with the calm, practiced ease of someone who still didn’t realize his quiet competence made people feel safe; Hazel on the edge of the forest, talking to a horse that looked like it belonged in a nightmare, her voice gentle as she ran her hand along its muzzle; Frank carrying a stack of archery targets with the careful patience of someone trying not to break them and accidentally prove he could; Nico standing near the shadows beside Cabin Thirteen, looking like he was pretending he wasn’t watching all of them even though Percy knew he was.

Normal, Percy thought again, and he let himself believe it for another heartbeat.

Annabeth nudged his hand with hers as they walked, their fingers catching like it was the most natural thing in the world, and Percy’s chest eased in that small, stupid, grateful way it always did when he remembered he had her. “After breakfast,” Annabeth said, “I want to check the repairs on the Athena cabin roof, because apparently someone decided a javelin makes a great climbing tool.”

Percy made a face. “Please tell me that someone wasn’t me.”

Annabeth’s eyes flicked to him, amused. “This time, no. But the fact that you had to ask says a lot.”

He opened his mouth to defend himself, but she stepped closer for half a second, pressing her shoulder into his in a way that felt like a private joke, and Percy found himself smiling too hard to bother.

They might’ve stayed in that bubble, Percy and Annabeth and the soft normal of camp, if the conch horn hadn’t sounded from the Big House, low and echoing, vibrating through the trees in that unmistakable way that made every camper lift their head at once.

Annabeth stopped mid-step. Percy felt his instincts tighten like a rope.

“That’s never for something small,” Annabeth muttered, already turning toward the pine tree.

Percy followed, and as they moved, he realized the ocean feeling had sharpened, the strange tug returning like a reminder that it had been waiting for this.

Annabeth

If Annabeth had to describe camp life to someone who’d never experienced it, she would’ve said it felt like living in the middle of a myth that insisted on being ordinary. There were mornings when everything was bright and loud and full of small human routines, breakfast lines, argument-filled strategy games on the Athena cabin steps, someone yelling because a harpy had stolen a shoe, and there were other mornings when the air went tense, when the camp’s normal chaos aligned into something sharper, like a flock of birds suddenly shifting direction.

The conch horn did that to the camp every time.

As she walked with Percy toward the House, she tried to keep her body relaxed, tried not to let her mind sprint ahead into worst-case scenarios, but she couldn’t help noticing the way Percy’s gaze kept flicking toward the shoreline behind them, like part of him was listening in a direction no one else could hear. It was one of the things Annabeth loved about him—his instinct, his awareness, his unspoken connection to the world—but it also meant he sometimes carried weight without realizing he was doing it.

Campers gathered in loose clusters, sun catching on bronze weapons and messy hair and sleepy faces, and Chiron waited near the porch as usual, calm as a marble statue, his hands resting lightly on the arms of his wheelchair. That calm, Annabeth had learned, was never accidental; it was a choice, a deliberate steadiness meant to stop panic before it started.

Beside Chiron stood a girl Annabeth didn’t recognize.

The first thing Annabeth noticed was that the girl looked damp, as if she’d walked through mist or stepped out of the water and decided towels were optional. Her hair was dark and loose, curling slightly at the ends like it had dried in sea air, and her clothes clung just enough to suggest salt and wind. She wasn’t wearing camp orange, and the fact that she wasn’t claimed was almost visible in the way she stood—uncertain, trying to look brave while her eyes flicked across the crowd.

Chiron’s voice carried easily. “Campers, we have a new arrival this morning.”

Annabeth watched the girl’s face as the crowd reacted, watched her swallow and lift her chin, and Annabeth recognized the expression even if the circumstances were different; it was the look of someone trying not to show how badly they wanted to belong.

“This is—” Chiron hesitated, glancing toward her, and the girl offered a small, apologetic smile. “—this is a camper who has not yet been claimed. She tells me her name is Marina.”

A ripple moved through the crowd at the name alone, because demigods were superstitious like that, because names held meaning, because everyone knew water names tended to come with water problems.

Chiron continued, “She arrived at our borders by… unusual means. The Naiads found her near the shoreline. She is safe, and she will be staying with us while we determine where she belongs.”

Annabeth felt Percy’s attention snap toward the girl, and she didn’t need to look at him to sense the subtle shift in his posture, the way he leaned forward just slightly like his instincts had recognized something.

Marina’s gaze swept the crowd, hesitant at first, then faster, as if she were searching for something specific.

And then her eyes landed on Percy.

Annabeth saw it immediately: the way Marina’s whole face brightened, the way she looked relieved in a way that didn’t make sense unless she already knew Percy’s name, unless she’d already decided he was the person she needed.

Percy didn’t notice the intensity. Percy rarely noticed intensity when it was directed at him, because Percy had never fully understood that people could look at him the way they looked at legends.

Annabeth noticed.

Chiron motioned lightly. “Please be welcoming, as you always are,” he said, and the meeting began to break apart into chatter and movement, campers already whispering theories and making bets about which cabin she’d belong to.

Annabeth turned slightly toward Percy, ready to say something—something normal, something grounding, maybe a joke about how at least it wasn’t another prophecy—but Marina was already moving.

She approached quickly, her steps light on the gravel path, and before Annabeth could speak, Marina was standing in front of Percy like she’d been pulled there by a tide.

“Percy Jackson?” Marina asked, breathless, hopeful, her eyes fixed on him with an open intensity that made Annabeth’s spine straighten without her permission.

Percy blinked, then smiled automatically, because Percy smiled at everyone. “Yeah, that’s me.”

Marina let out a relieved laugh that sounded like she’d been holding her breath for hours. “Okay. Good. I was hoping you’d be here.”

Annabeth’s mind caught on the word hoping, because hoping implied expectation, and expectation implied she’d been thinking about him before she even arrived.

Percy, oblivious, tilted his head. “Uh—why?”

Marina’s cheeks flushed slightly, but she didn’t look away. “Because… I don’t know anyone here, and I—” Her gaze flicked briefly toward the ocean, then back to him, as if the water itself had pushed her forward. “I had a dream. I was by a beach and I heard your name in a whisper and saw you, which of course I didn't realize it was you....until now."

Percy’s expression softened, instantly sympathetic in that dangerous way that made him offer pieces of himself without realizing he was doing it. “Oh okay” he said gently. “Yeah, I get that. Demigods have dreams a lot.”

Annabeth tried to speak then, tried to insert herself into the conversation the way a normal girlfriend would, but Marina barreled forward, words rushing out like she couldn’t stop them. “Can you show me around?

Percy glanced at Annabeth, like he was checking whether it was okay, and Annabeth forced her expression into neutral calm, because she wasn’t going to be the girlfriend who said no to a scared new camper.

“Sure,” Percy said. “I can help.”

Marina’s smile was wide and bright, and when she reached out and touched Percy’s arm in quick gratitude, Annabeth felt something tighten in her chest.

It wasn’t anger.

Not yet.

It was the first sting of something she didn’t want to name.

Piper

Piper found Annabeth later near the Athena cabin steps, where the setting sun warmed the wood and the camp smelled like strawberries and bronze and the lake breeze drifting in through the trees. Annabeth was sitting with her notebook open on her knees, but she wasn’t writing; her pencil hovered, tapping lightly against the page in a rhythm that suggested her thoughts were somewhere else.

Piper sat beside her without asking, because that was the kind of friendship they’d built—quiet, no performance, just presence.

“You look like you’re trying to outthink your own feelings. Where's Percy?” Piper asked gently, because Piper had always been able to say things with a softness that made them feel less like accusations and more like truths you could hold.

Annabeth exhaled through her nose, almost a laugh, almost a sigh. “I’m fine, and he's with the new chick...again.."

Piper’s eyebrows lifted, the universal expression of sure you are.

Annabeth stared toward the path where the cabins curved toward the beach, and even from here she could see Percy in the distance, moving through camp with that familiar easy energy, and beside him—too close for Annabeth’s comfort—Marina matched his steps like she belonged there already.

Piper followed Annabeth’s gaze and hummed quietly. “Oh.”

Annabeth’s jaw tightened, and she hated herself for it because she hated feeling like this, hated that jealousy could creep into her chest when she had spent years surviving monsters and war and betrayal without blinking. “She keeps… interrupting,” Annabeth said, and it came out sharper than she intended, so she forced her voice down into something steadier. “Every time Percy and I start talking, she shows up, like she’s timed it.”

Piper’s expression stayed careful. “Is she being rude?”

“No,” Annabeth admitted, because truth mattered, even when it was inconvenient. “She’s not rude. She’s just… obvious. She looks at him like he’s a life raft.”

Piper leaned back on her hands, watching the distant figures. “Percy looks at everyone like they deserve saving,” she said softly, and there was affection in her tone, because Piper understood Percy’s heart in her own way. “He probably doesn’t even realize.”

“That’s the problem,” Annabeth muttered, then immediately regretted it because it sounded petty. “I trust him. I do. I just—” She stopped, because saying I don’t like sharing him felt childish, but the feeling was still there, tight and undeniable, like a wire pulled too taut.

Piper nudged her shoulder gently. “Annabeth, you’re allowed to feel jealous without it meaning you don’t trust him,” she said, and the honesty of it hit like cold water. “You’re not a robot. You’re a person who loves someone very intensely, and sometimes people don’t love quietly.”

Annabeth’s eyes flicked to Piper, a mix of gratitude and frustration because Piper was right, and being right didn’t make the feeling easier. “What do I even do?” Annabeth asked, voice lower now, because admitting uncertainty always felt like stepping onto unstable ground.

Piper’s mouth curved in a sympathetic half-smile. “You talk to him,” she said simply, “but not when you’re boiling. And until then… you let yourself feel it without letting it control you. Also,” she added, eyes glinting with a hint of humor, “we can absolutely judge her a little bit in private, as a treat.”

Annabeth let out an involuntary laugh, the tension cracking for half a second.

Then, like the universe wanted to prove her point, Marina appeared again, practically jogging toward Percy, waving like she’d been searching for him for hours, and Percy turned immediately, attention shifting to her without hesitation.

Annabeth’s laugh faded into a slow, controlled exhale.

Piper watched her carefully. “Okay,” Piper said, voice gentle again, “so it’s not nothing.”

Annabeth stared at the scene, the way Marina leaned close to say something, the way Percy listened with that soft patience he didn’t even realize he offered—and Annabeth felt jealousy sharpen into annoyance, not because Percy had done anything wrong, but because she could already see the pattern forming.

Cute moments stolen by interruption.
Percy’s attention constantly redirected.
Marina’s crush growing bolder with every minute Percy remained kind.

Annabeth pressed her pencil harder against the paper, leaving a dark mark. “If she asks him to show her the ocean again,” Annabeth said quietly, “I might throw her into it.”

Piper’s eyes widened, then she burst out laughing, and the sound startled a pair of passing campers.

Annabeth didn’t laugh, not fully, but the corner of her mouth tugged, because sometimes having someone witness your irrational feelings made them feel smaller, less dangerous.

Still, as she watched Percy turn back to Marina, smiling gently like he always did, Annabeth felt the ocean’s earlier restlessness echo in her own chest, and she had the sudden, unsettling thought that this was only the beginning.

Because if Marina wasn’t claimed yet, then the camp didn’t know what she was.

And Percy—Percy was already acting like he’d decided he was responsible for her.