Seojun looked like someone who belonged to clean city skylines and private rooftop parties, not a quiet harbor that smelled of salt and rust.
Tall, straight posture.
Soft brown hair falling naturally over his forehead.
Fair skin that caught the morning light.
A man in his late twenties, dressed in a fitted blue-and-white striped T-shirt tucked into black sports pants, the fabric hinting at a well-trained body — not bulky, but toned in the way of someone who swam, ran, and had time to take care of himself.
A black backpack rested on one shoulder.
Dark sunglasses hid his eyes, and with them whatever emotion he refused to show the world.
His expression was blank — the kind that came after you had felt too much for too long.
He stood near the dock, phone against his ear.
"I told you, I'm fine," he said calmly.
The voice on the other side was loud even through the speaker.
"Fine? You broke up three days ago and disappeared. That's not fine. Come with us tonight. It'll be fun — you need people around you."
Seojun let out a quiet breath, gaze drifting to the endless line where the sea met the sky.
"I don't feel like celebrating anything."
"You don't have to celebrate. Just don't stay alone. You know staying alone makes it worse."
A pause.
"I know it's not easy," his friend continued, softer now. "But you can't sit with that sadness by yourself. Let us cheer you up, just a little."
For a moment Seojun said nothing.
Then, gently:
"Thank you… really. But I need some time alone."
"Seojun—"
"I'm going on a short vacation," he added. "Just a few days. I'll call you when I get back."
His friend sighed in defeat. "You promise?"
"I promise."
"…Okay. Don't disappear again."
"I won't."
They said goodbye, and the line went silent.
Seojun lowered the phone slowly, slipping it into his pocket.
For a few seconds he just stood there, listening to the sound of waves hitting the wood beneath his feet.
"Ready?"
The voice came from the boat beside the dock.
Seojun looked up and gave a small, polite smile.
The captain — a sun-tanned man in his fifties who had known him since childhood — watched him with warm, familiar eyes.
"Ready," Seojun replied.
He stepped onto the boat.
The moment his foot landed, the deck shifted gently beneath him, the water rocking the vessel in a slow, living motion.
His body swayed with it, a subtle loss of balance before he adjusted — a reminder that this world moved differently from the land he came from.
The captain chuckled. "Still not used to it?"
"I like it," Seojun said. "Feels… free."
IThe man's expression softened. "Your parents are worried about you."
"I told them I'd be fine."
"They also told me to feed you properly."
That earned a faint, real smile.
"I'm doing okay," Seojun said. "Really uncle Sung-min."
The captain studied him like a father would, then nodded and started the engine.
The boat pulled away from the dock, cutting through the glittering water.
Two days later, they were in the middle of the ocean, near a massive rock formation rising from the deep like a sleeping giant.
Seojun loved this place.
The water was impossibly blue, the sky endless, the air clean enough to breathe without thinking.
He leaned over the control panel, fascinated.
On the screen, shapes moved beneath them.
"Sonar," the captain corrected when Seojun called it radar. "It shows movement underwater — fish, sometimes bigger things."
"That's incredible," Seojun murmured, eyes shining behind his sunglasses.
He had been filming everything — the sea, the boat, himself laughing as he jumped into the water earlier, droplets clinging to his hair when he climbed back up.
For a few minutes at a time, he forgot.
Forgot the breakup.
Forgot the empty apartment.
Forgot the silence.
Here, he was just a young man on the ocean, sunlight warming his skin.
The chase,
Far from any peaceful route, a different boat cut violently through the open water.
It was not built for leisure.
The hull was scarred with old impact marks, metal rails lined the sides, and the deck was cluttered with equipment — coiled ropes, a mounted harpoon gun, stained coolers, a winch still wet from its last catch.
Four men moved across it with the ease of people used to hunting together.
On the central console, the sonar screen pulsed.
A massive shape moved beneath the surface.
"Still ahead of us," one of them said, gripping the wheel tighter. "Big one. Damn big."
Another man leaned forward, eyes sharp. "That's not a tuna… that's a monster."
The boat accelerated, engine roaring as it slammed against the waves.
Ahead of them, the ocean broke for a fraction of a second —
A powerful tail surfaced.
Not fully visible.
Too fast.
Too large.
Then gone.
"NOW!"
The harpoon fired with a violent metallic crack.
The line tore through the water.
A hit.
A deep, drawn-out sound rolled up from beneath the hull — so low it was felt more in their bones than in their ears.
One of the men froze.
"That a whale?"
"Too deep," the helmsman muttered, eyes locked on the moving mark. "Focus — it's getting away."
The sea exploded.
Something below thrashed with terrifying force, pulling the cable so hard the mounted gun screamed against its bolts.
"What the hell— HOLD IT—!"
The rope went taut… then jerked wildly.
For a moment — just a moment — a blurred form twisted beneath the surface.
Not the clean shape of a fish.
Too long.
Too fluid.
A flash of something pale between dark water and red.
Then the line snapped free.
The ocean turned cloudy with blood.
"Damn it! It's wounded — it can't go far!" someone shouted.
On the sonar, the shape moved again — faster now, erratic.
Not swimming.
Fleeing.
The boat turned sharply, chasing.
Below them, the creature's movements grew weaker.
The powerful tail struck the water once more before disappearing into deeper shadow, leaving a spreading trail of red behind it.
For a brief second, far under the surface, a slender silhouette curled in on itself — arms pulling close to its body as it forced itself forward.
Then it was gone again, lost in rock and darkness.
On the screen, the signal slowed.
"Heading toward the reef," the man at the console said. "It's trying to hide."
"Follow it."
The hunting vessel surged after it.
Later, Seojun leaned against the railing, letting the sun warm his skin and the endless blue horizon calm him. The gentle sway of the boat, the sound of the waves, and the salt in the air filled him with a quiet peace he hadn't experienced in a long time.
Suddenly, the sonar beeped sharply. His eyes widened as he leaned over the screen. "Uncle, look! Something's moving… it's big, and it's coming slowly." Excitement bubbled in his chest—he had been curious about the boat and its instruments ever since he stepped aboard, and this was the first time he'd felt that thrill of being on the water in years.
Captain Sung-min, standing beside him with a calm expression, followed Seojun's gaze. "Hmm… I see it. That's a big one, alright. Moving slowly… maybe it's injured."
Seojun's heart raced. "Injured?"
Before Sung-min could answer, the vessel appeared on the horizon, moving toward them. The captain's eyes narrowed slightly. "That crew. They usually chase out of season, and I think they were after that big fish. That's why they came so close."
Seojun watched the vessel, tense and curious. "Then… why aren't they coming all the way?"
Sung-min's voice was steady. "They know me. If they get caught chasing something illegally and I see them… I'll report them to the authorities. Not lucky for them this time. That's why they're turning back."
The other boat slowed, hesitated for a moment, and then moved away, fading toward the horizon.
Seojun exhaled and turned back to the sonar. The blip beneath the water stayed still, not moving at all.
"It's just… staying there?" Seojun asked.
"Could be hiding," Sung-min said, pointing at the screen. "But judging by how slow it was moving before, I'd say it's probably injured. Smart enough to stay put for now."
Seojun's excitement shifted to a lighter, calmer energy, and he smiled. "Alright…I'm hungry, let's eat. I'll cook for you, Uncle."
Sung-min chuckled, shaking his head. "You got it. Let's see what you've got."
They spent the next while cooking together on deck, the sun warm above them and the gentle waves lapping against the hull.
Lunch was simple but satisfying, filled with laughter and small talk, as the endless blue horizon stretched out around them and the mystery beneath the water waited quietly, motionless.
The dive,
Seojun, mood lifting again under the sun, stretched his arms. "I'm going to dive in."
The captain shook his head. "That thing is still under us. Could be a shark. If those guys chased it here, it'll be aggressive."
"If it was dangerous, it would've moved already," Seojun replied. "Or approached the boat."
"No. I can't let you dive," the captain said firmly.
"I'll use the cage."
A long look passed between them.
Then the captain sighed. "You stay in contact the whole time."
"I will."
Seojun bent down to adjust his wetsuit, zipped it carefully, and checked the oxygen tank strapped to his back. Mask in place, fins ready, he tested the regulator once, feeling the familiar cool neoprene against his skin. Heart racing, he approached the edge.
The metal cage lowered slowly into the water, chains creaking as it sank.
Seojun stepped inside, camera secured to his wrist, a small probe in his other hand to detect nearby movement.
The ocean swallowed him.
Sunlight broke into silver shards around his body as he descended.
The world changed.
Sound disappeared.
Only the rhythm of his own breathing remained.
Above him, the surface shimmered like liquid glass.
Below — endless blue.
Schools of small fish scattered like drifting stars. The rock formation extended into the deep, covered in coral and shadow. The water moved in slow, majestic currents that made the cage sway gently in space.
Seojun turned in awe, filming everything, eyes wide with pure curiosity and excitement.
His voice came through the communicator, breathless. "This is… insane."
The captain listened to his excitement over the radio, tension easing from his shoulders. Relief washed over him as he realized Seojun was doing well, immersed in the beauty of the ocean but safe in the cage.
Seojun turned slowly in the cage, filming the fish and the coral formations. He activated the small probe in his hand, sending out a faint pulse of light to detect movement nearby.
A flicker caught his eye—something moved near the shadowed rock wall. Heart quickening, he pointed the probe toward it.
The light cut through the water, but the cage was too far, the depths too dark. Whatever it was had slipped into the shadows, impossible to see clearly.
Seojun's pulse raced. *Something is there..*
He adjusted the camera again, filming the shimmering water, the coral, and the endless blue surrounding him, but the presence lingered in his mind, silent, still, and just out of reach.
Above him, the sunlight sparkled on the surface. Below, the shadow near the rock waited, unseen, leaving the ocean to hold its secret.