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Tides from Tartarus

Summary:

A joke DNA test reveals Jason Todd’s true mother didn’t abandon him—she vanished into a hell older than myth. While the Batfamily reels from the discovery, the Justice League battles an overpowered, vengeful force that has just escaped the Pit: Percy Jackson. She clawed her way out of timeless Tartarus after 18 years, only to find her son’s life written in tragedy and blood. Now, a demigod princess with nothing left to lose must face a world of capes and cowls to reclaim the boy she lost, and a son who thought he was done being saved must decide if he can still be someone’s child.

Notes:

i have a Wattpad account under the same name

Chapter 1: Of Storms and Blueprints

Chapter Text

The first time Persephone “Percy” Jackson felt the flutter, she was ankle-deep in the surf of the Pacific, arguing with a minor naiad about the proper salinity for nurturing seahorses.

“It’s not a matter of opinion, it’s marine biology!” Percy insisted, hands on her hips, the tide swirling playfully around her calves.

The naiad sniffed. “You smell of deep trenches and old power, Princess, but you know nothing of local water customs.”

Percy opened her mouth for a scathing retort when it happened. A tiny, internal swoosh, not of water, but of life. A gentle, bubbling kick that had nothing to do with the ocean. Her words died in her throat. Her hands flew to her still-flat stomach, pressing against the soft fabric of her t-shirt.

The naiad, seeing the shift in Percy’s sea-green eyes—the sudden storm of awe and terror—softened. “Ah,” she said, her voice now a gentle ripple. “New currents begin. A riptide of love, strong enough to pull even a goddess’s daughter. Congratulations, daughter of Poseidon.”

Percy didn’t hear the rest. She was already sprinting, barefoot and breathless, up the beach toward the New Rome apartments, saltwater and sand flying in her wake.

She burst into the sunlit chaos of their living room, where Andrew Chase was immersed in a scale model of a proposed new library for the legion, his brow furrowed in concentration, a streak of charcoal dust on his cheek.

“Andrew.”

He looked up, alerted by the tone in her voice—not fear, but something seismic, something that changed tectonic plates. “Percy? What’s wrong? Did the naiad call you a surface-dweller again?”

She crossed the room, grabbed his hands—still clutching a tiny Doric column—and pressed them firmly against her stomach. “Feel.”

He blinked, his storm-grey eyes confused. “Feel what? Your abs? Which are, as always, terrifyingly impressive—”

“Shhh!” she commanded, closing her eyes. “Just… wait.”

They stood there, frozen in a sunbeam, the world narrowing to the point where his calloused palms met her skin. For a long moment, there was nothing but the sound of their breathing. Andrew’s face was a masterpiece of loving patience, waiting for his wife’s latest hurricane to make landfall.

Then, it came again. A delicate, unmistakable thump-thump-thump, like a tiny heartbeat against his fingers, but separate from her own.

Andrew Chase, son of Athena, veteran of two wars, architect of wonders, felt his knees go weak. The column clattered to the floor. His gaze snapped from their joined hands to her face, his own pale with shock. “That’s… that’s not…”

“It’s a baby, you seaweed-for-brains,” Percy whispered, her eyes glistening. “Our baby. They’re saying hello.”

The model of the library was forgotten. The world outside ceased to exist. Andrew sank to his knees, his arms wrapping around her waist, his ear pressed to her stomach. He didn’t speak. He just listened, his shoulders beginning to shake. When he looked up, his eyes were wet. “A legacy,” he breathed, the word heavy with both wonder and a profound, new kind of hope. “Our child… a legacy of our world.”

Our legacy,” Percy corrected, her fingers threading through his curls. “Half you, half me. Which means they’ll be unbelievably smart and impossibly stubborn. And probably able to summon a tidal wave when they have a tantrum. We’re going to need a very, very sturdy house.”


The pregnancy was its own epic quest. Percy, who had faced Titans and Giants with a smirk, was laid low by morning sickness of legendary proportions.

“It’s not morning sickness,” she groaned from the bathroom floor one afternoon, her forehead resting on the cool porcelain. “It’s a 24/7 mutiny. My own body has been possessed by a queasy Fury.”

Andrew, ever the strategist, had a plan. He built a makeshift bed on the bathroom floor with pillows and blankets, stocked a cooler within arm’s reach with saltines, blue Gatorade, and sea-salt caramel candies, and read aloud from his architecture textbooks until she fell asleep. His steady voice detailing load-bearing walls and flying buttresses was the only thing that seemed to calm the storm inside her.

When the nausea subsided, it was replaced by other adventures. Percy’s control over water became… mood-based. She’d cry during a sappy commercial and all the pipes in the building would groan in sympathetic unison. She’d get frustrated with a jar lid and the water in their kettle would boil over in a furious geyser.

“The baby’s practicing,” she’d declare, unrepentant, as Andrew mopped up the kitchen.

“They’re practicing causing structural damage,” he’d mutter, but he’d kiss her temple and bring her another pickle-and-ambrosia sandwich, the only thing she craved.

As her belly swelled, a new kind of fluff settled over them. It was Andrew, the stoic warrior, talking to her stomach every night, his voice low and earnest.

“Alright, little one. Today, your mother attempted to negotiate with a pack of feral pegasi for better parking at the Forum. It was a bold, if ill-advised, tactical move. Let’s discuss the merits of diplomatic overtures versus clear boundary setting…”

Percy would lie back, stroking her belly, a soft smile on her face. She’d feel the baby kick in response to Andrew’s voice, a strong, deliberate thump.

“They’re agreeing with me,” Andrew would say, pride in his voice.

“They’re kicking you for being a bore,” Percy would retort, but she’d pull him down for a kiss.

They spent hours planning. Andrew, of course, approached it like a campaign. He designed the nursery with escape routes, monster-deterring celestial bronze inlays in the window frames, and a mobile that doubled as a star chart.

“Overkill, wise guy,” Percy laughed, looking at the blueprints.

“Contingency planning,” he said, his arm around her shoulders. “They will be a Jackson-Chase. They will carry our stories, our strengths. The mortal world and our world will both lay claim. This room will be their first sanctuary.”

Percy’s contribution was less about defense and more about soul. She painted a mural on one wall—not of heroes and battles, but of a calm, sun-dappled sea, with friendly hippocampi and playful fish. In a hidden corner, she painted a tiny, smiling shark.

“So they know where they come from,” she said softly, her hand resting on the curve where their child grew. “And that it can be gentle, too.”

The fluff was in the quiet moments: Andrew massaging her swollen feet after a long day, Percy using a tiny curl of water from a glass to cool his neck as he worked. It was in the ridiculous arguments over names.

“Perseus is a classic,” Andrew offered.

“Absolutely not. I am not naming my kid after my dad’s weird obsession with that particular hero. It’s narcissistic.”

“Athena?”

“Too much pressure. She’d either be insufferably proud or permanently disappointed.”

“What about something strong? Simple?”

They found it one evening, reading an old myth. “Jason,” Percy said, testing the name. “Leader of the Argonauts. He navigated impossible waters, gathered a crew of heroes… and had a lot of messy family drama. Fitting.”

Andrew nodded slowly. “Jason. It’s a good name. Strong. A seeker.” He placed his hand on her belly. “Jason. Jason Jackson Chase.”

The baby kicked, hard, as if in approval.


Jason Jackson Chase entered the world not with a whimper, but with a sound like a wave crashing against a cliff—a loud, indignant wail that shook the windows of the infirmary. He was small, with a fierce grip and a head of dark, damp curls, and eyes that, when they finally blinked open, were a startling, intelligent blue, already seeming to assess the brightness of the lights.

Percy, exhausted and radiant, held him, and every battle, every scar, every moment of darkness was worth it for this weight in her arms. Andrew cut the cord with trembling, reverent hands, then simply stared, his entire being reordered around this tiny, furious person.

“Hey, Jace,” Percy whispered, her voice raw with love. “You gave us quite a journey. Welcome to the world, little legacy.”

The first two and a half years were a blur of sun-drenched, chaotic, perfect love. It was a different, more intense fluff, woven into the fabric of survival.

It was Percy, discovering that “Mom” was a title that came with its own unique power. She could calm Jason’s stormiest tantrum by filling the air with floating, glowing globes of seawater that danced like jellyfish. She taught him to swim before he could walk, the ocean itself cradling him, and he took to it like a dolphin, gurgling with laughter.

It was Andrew, the rational planner, who became a creature of pure instinct. He could decipher Jason’s different cries—the “hungry” wail, the “tired” fuss, the “I’ve dropped my stuffed squid” lament. He built him intricate block towers only for Jason, with a look of intense concentration, to toddle over and kick them down with a gleeful shout that was pure Percy.

Their son was a living blend of them. He had Andrew’s focused curiosity, taking apart a clockwork toy with solemn precision at eighteen months. But the dismantling was followed by an attempt to “fix” it by banging it on the floor, which was all Percy. He’d listen, enraptured, as Andrew read from picture books about buildings, pointing at arches and columns, but his favorite stories were the ones Percy told about Grandma Sally’s blue food, or the time Mom turned a pirate ship into a reef.

Their apartment was a shrine to this beautiful, fleeting chaos. Crayon drawings of what might be a hippocampus or a very spiky building adorned the walls. A stuffed owl sat next to a plush shark on Jason’s tiny bed. The air was filled with the smell of sea air, baby powder, and the graphite from Andrew’s perpetual sketches.

On the morning of Jason’s second birthday, they had a small party on the beach. He sat in the sand, a paper crown lopsided on his dark curls, utterly focused on the task of stuffing blue frosting cake into his mouth and then onto Frank’s surprised face. Later, as the sun set, Percy held him on her hip, pointing at the sea.

“That’s yours, too, Jace,” she murmured. “Always. No matter where you go, the sea will know you. It will always answer you.”

He babbled something back, a string of sounds that ended with a clear “Mama.”

Andrew stood behind them, his arms encircling them both, his chin on Percy’s shoulder. He didn’t need to sketch this. The image was etched onto his soul: his wife, his son, the endless ocean, the golden light. It was the blueprint for a perfect life, the one he had fought and bled and dreamed for. It was everything.

He didn’t know then that blueprints could be torn apart by fate. He didn’t know they had only six more months of this—of sandy kisses, of block towers, of lullabies sung off-key to the sound of gentle waves. The shadow of the quest was still over the horizon, but for now, in this moment, the sanctuary of their family was unassailable, built not of stone or celestial bronze, but of laughter, frosting, and a love as deep and enduring as the ocean floor