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Reincarnated as a Carp: The Evolution System

After a fatal accident, Daniel is reborn in an underwater world as a simple carp, retaining his human mind and guided by a mysterious evolution system. In the vast and perilous ecosystem of a lake filled with deadly predators and ancient secrets, he must learn to survive, evolve, and uncover the purpose behind his new existence

yGonGon · แฟนตาซี
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The Shadow in the Lake

Daniel was still reeling from the impact of that strange voice's words. An observer? Someone—or something—that seemed to know who he was, or rather, what he had become. The idea that he wasn't alone in the lake was both comforting and unsettling. After all, if someone was watching, they might also be waiting... to hunt.

"I need to figure out where I am before it's too late," thought Daniel, swimming cautiously through the algae. His newly acquired camouflage ability made every movement safer. He could vanish from the sight of smaller predators, but he knew it wouldn't always be enough.

As he explored more of the lake, Daniel began noticing details he had missed before. Some areas were calm and rich in vegetation, perfect for hiding, while others were clear and treacherous, where any movement would attract attention. He also noticed that the water had a strange taste. It wasn't entirely natural, as if there was something more than just sediment and plants.

While he swam, the system flickered in his mind again.

[New Quest Available: Territory Reconnaissance]

Objective: Explore 20% of the Silent Lake.

Reward: 5 Evolution Points and Map Data Unlock.

"Reconnaissance, huh?" murmured Daniel. "That makes sense. Knowing where I am increases my chances of survival."

He accepted the quest, and a small counter appeared in the corner of the panel: Area Explored: 0.5%. It was slow progress, but necessary. He began swimming deeper, avoiding larger fish and occasionally feeding on tiny organisms to keep his energy up.

After some time, Daniel spotted something that made him stop dead in his tracks. A circle of stones jutted out from the lakebed, covered in moss and slime but unmistakably symmetrical. He cautiously swam around the structure, a chill running through his scales.

"What is this? It looks... artificial," he thought, examining the worn markings on the stones. They bore symbols he didn't recognize, but there was something deeply unsettling about them.

Before he could investigate further, the system flashed red.

[Alert: Predator Nearby!]

Daniel quickly turned, but saw nothing. Instinctively, he activated his camouflage, blending into the surroundings as his eyes scanned the area. At first, everything seemed calm, but then he noticed it: the silence. The lake was eerily still, with no sounds of other fish swimming or any signs of movement.

That's when he saw it.

A massive shadow emerged from the dark depths of the lake, moving with predatory grace. It was larger than anything Daniel had seen so far, a creature seemingly made of pure strength and instinct. Its scales were as black as coal, and its eyes glowed with a sinister, almost intelligent light.

"This is... a monster," Daniel thought, frozen. He knew he couldn't fight it; his only chance was to remain hidden.

The predator circled the area slowly, as if sniffing for something. Daniel held his "breath," trying not to make any movement that might give him away. His camouflage seemed to be working, but for how long?

The system flashed again, this time with a new notification.

[Bonus Quest: Survive the Lake Predator for 3 Minutes.]

Reward: +10 Energy, +1 Skill Point.

"Three minutes?! That's a lifetime!" he thought, trying not to panic.

The predator continued its patrol, its presence so oppressive that Daniel felt as if the water around him was getting heavier. Each movement of the monster stirred sediment from the lakebed, creating a murky veil that made visibility harder.

Daniel used the distraction to slowly move behind one of the stones in the circle. Pressing his body against the rough surface, he tried to become part of the scenery. Time seemed to crawl.

"Two minutes..." he thought as the timer blinked in his mind.

The monster paused, its fins trembling as if it had sensed something. Daniel felt a chill. It was as if those eyes were looking directly at him, even with his camouflage active.

Finally, the timer hit zero.

[Quest Complete! Rewards Granted.]

Daniel didn't have time to celebrate. The predator seemed to lose interest, slowly moving away. But before it disappeared completely into the darkness, it let out a low, guttural sound—a muffled roar that seemed to vibrate through the entire lake.

As silence returned, Daniel released the tension he hadn't realized he was holding. He swam out of the stone circle, his scales still bristling from the encounter.

"This place is far more dangerous than I imagined," he thought, as the system updated the progress of his main quest. He had only explored 5% of the lake and had already nearly been devoured.

Yet something within him shifted. He felt—though he didn't know how—that the predator wasn't just a random obstacle. There was a connection between the monster, the lake, and that mysterious voice he had heard earlier.

[System Note: New Milestone Unlocked – Lake Predator.]

Tip: Some threats can become allies with the right approach.

Daniel squinted—or at least tried to. "Allies? That's gotta be a joke..."

But as he swam away from the stone circle, a smaller shadow appeared behind him, subtle but clearly watchful. He felt that, deep within this lake, something was beginning to stir. And he, now a simple carp, was part of something far greater than he could imagine.

A new thought crossed his mind:

"If I'm going to survive here, I need to learn fast. And maybe, just maybe... that predator could teach me."