Reincarnated as a Carp: The Evolution System

The massive crustacean stood its ground, steam billowing from the geothermal vents behind it like a natural fortress. Its armored body shimmered in the light filtering through the water, and its claws snapped in a sharp rhythm, a clear warning to any would-be intruders. Daniel floated a short distance away, carefully assessing his options.

"I'm supposed to fight that?" he thought, incredulous. "This thing looks like it eats fish like me for breakfast."

But the system's mission hovered persistently in his mind.

[Mission: Claim the Thermal Grotto.]

[Progress: 0% — Threat Neutralization Required.]

Daniel considered his options. He could flee and abandon the mission, but the grotto was a prime location. The abundance of food and the warmth from the vents could provide a safe haven for recovery and growth. However, taking on the crustacean directly was out of the question.

"Time to get creative," he muttered.

[Analyzing Environment… Strategic Tip Available.]

[Tip: Use the geothermal currents to your advantage. Predators in this area rely on territorial behavior and limited mobility.]

Daniel's eyes—or rather, his aquatic sense of perception—focused on the jets of hot water surging from the vents. The crustacean appeared reluctant to get too close to them, moving carefully around the streams.

"Interesting," Daniel thought. "It's armored, but even it avoids those vents. I can use that."

The plan began to form. First, Daniel needed to test how the crustacean would react. He swam in a wide arc, darting close enough to the creature to catch its attention. The crustacean immediately shifted, its claws raised defensively.

Daniel bolted, swimming toward one of the vents. He felt the water heat up as he approached, but his small size and agility allowed him to maneuver around the current. The crustacean hesitated, clicking its claws in frustration as it stopped short of the vent.

"Perfect," Daniel thought, a glimmer of hope sparking in his mind.

He repeated the maneuver several times, each pass luring the crustacean closer to the vents. It grew increasingly agitated, its movements more erratic. On his fourth attempt, Daniel saw his opening. He swam directly between two vents, timing his movement with the surging currents.

The crustacean, blinded by its aggression, charged after him. It was too slow to adjust as the geothermal vent erupted, sending a blast of scalding water directly into its unprotected joints. The creature flailed, releasing a low, guttural hiss as it staggered backward.

"Got you!" Daniel thought triumphantly.

[Damage Inflicted: Crustacean HP -20%. Weak Point Identified: Joint Exoskeleton.]

Encouraged by the notification, Daniel pressed the attack, circling around the creature and baiting it toward another vent. It attempted to strike with its claws, but Daniel was too fast. Another blast of hot water erupted, hitting the crustacean squarely on its underbelly.

The once-dominant predator began to falter, its movements sluggish and disoriented. Sensing victory, Daniel swam in close and nipped at its exposed joints, further weakening it.

[Critical Hit! Crustacean HP -30%. Status: Vulnerable.]

The crustacean let out a final hiss before collapsing near the base of a vent, its massive body twitching weakly. Daniel floated nearby, watching cautiously to ensure it wasn't a trick. When it remained still, the system chimed in.

[Mission Complete: Claim the Thermal Grotto.]

[Rewards Unlocked: Permanent Access to Thermal Grotto, +20 Evolution Points.]

Relief washed over him as the notification appeared. But before he could celebrate, the system continued.

[Level Up Achieved! New Level: 3.]

[Stat Increase: Agility +2, Perception +1.]

[New Ability Unlocked: Thermal Sense — Detect heat sources and thermal currents within a 10-meter radius.]

Daniel felt a surge of energy coursing through his body. His fins moved more fluidly, and his senses sharpened. He could now detect subtle changes in the water temperature, a skill that would undoubtedly prove useful in this treacherous lake.

Exhausted but exhilarated, Daniel swam to a sheltered corner of the grotto. The crustacean's demise had cleared the area, and for the first time since his reincarnation, he felt a semblance of safety. He nibbled on some luminous kelp, restoring his energy as he reflected on the battle.

"This world isn't just about surviving," he realized. "It's about adapting—finding ways to turn the odds in my favor."

As he rested, the system displayed a new notification.

[Territory Claimed: Thermal Grotto.]

[Resource Access Unlocked: Enhanced Recovery Rate in Thermal Zones.]

"Now this is what I'm talking about," Daniel thought, feeling a sense of accomplishment. The grotto's geothermal warmth seeped into his body, soothing his muscles and accelerating his recovery.

However, his moment of peace was short-lived. From the shadows beyond the grotto, he sensed movement. A faint ripple in the water alerted him to the presence of another creature.

Daniel tensed, activating his camouflage instinctively. As the figure came into view, his eyes widened.

It wasn't another predator—but a fish. A shimmering, silver-scaled fish about his size swam cautiously into the grotto, its movements hesitant.

For a moment, the two stared at each other, neither making a move. Then, to Daniel's surprise, the fish spoke—or at least, he heard it.

"You defeated the guardian?" the fish asked, its voice echoing faintly in his mind.

Daniel blinked, stunned. He hadn't encountered another creature capable of communication until now.

"I… yeah, I guess I did," he replied cautiously.

The silver fish tilted its head, studying him. "Impressive. Few survive an encounter with the guardian, let alone claim its territory."

Daniel felt a mix of pride and wariness. "Who are you?" he asked.

The fish swam closer, its silver scales glinting in the geothermal light. "Call me Mira. And you?"

"Daniel," he replied, keeping his tone neutral.

Mira nodded. "Well, Daniel, you've stirred up quite a bit of trouble. Defeating the guardian is no small feat, but it won't go unnoticed. The predators here aren't just mindless beasts—they have alliances, territories, and grudges. You've just painted a target on your back."

Daniel's stomach sank. "Great. As if things weren't hard enough already."

Mira smirked—or as much as a fish could smirk. "Don't worry. You might have just made a powerful enemy, but you've also caught the attention of those who could help you. The question is: can you survive long enough to prove yourself?"

Daniel stared at her, his mind racing with questions. Who was this fish? And what did she mean by "proving himself"?

Before he could respond, the system chimed once more.

[New Quest Unlocked: Alliance or Enemy?]

[Objective: Gain Mira's Trust.]

[Reward: Access to Local Knowledge and Ally Benefits.]

Daniel sighed. "Of course. Another challenge. Looks like rest will have to wait."

Mira gave him a knowing look. "Welcome to the lake, Daniel. Things are only just beginning."