The deeper Kael ventured, the more the Emerald Grotto transformed. The humid air grew heavy with a static charge that made the bioluminescent moss flicker like dying lightbulbs. At the heart of the cavern, the tunnel opened into a vast, flooded amphitheater.
In the center of a black, stagnant lake stood the source of the dungeon's mana.
The Boss: Elder Mire-Crag
It looked like a massive, moss-covered boulder until it stood up on six jagged, obsidian-like legs. The Elder Mire-Crag was a prehistoric crustacean-type monster, its shell reinforced by layers of mana-conductive quartz. It had no face, only a vertical maw lined with grinding stone teeth and two massive, pincer-like claws that could crush a reinforced APC.
[BOSS STATUS]
Name: Elder Mire-Crag (Rank-F Elite Boss)
Level: 10
HP: 1,200 / 1,200
Traits: [Heavy Armor], [Earth Resonance], [Slow Regeneration]
Danger Level: High (For Standard F-Rank Parties)
The beast roared, a sound like grinding tectonic plates, and slammed its claws into the water, sending a shockwave toward the shore.
Kael didn't draw his sword. He stood at the water's edge, his golden eyes scanning the boss's internal structure.
"Let's see what a God's body can really do," Kael whispered.
He initiated Thunder Dash. Instead of a simple 10-meter flicker, he chained the movement, his Infinite Mana allowing him to ignore the cost. To the boss, Kael became a continuous streak of golden light, circling the lake at speeds that defied the dungeon's physics.
BOOM.
Kael appeared directly in front of the beast's armored face. He pulled back his fist, testing his Strength (25). He didn't use lightning; he used raw, physical force. His punch landed on the quartz shell, and a spiderweb of cracks erupted instantly. The 10-ton monster was sent skidding backward across the lake, its legs flailing.
[BOSS HP: 1,050 / 1,200]
"Tougher than the slimes," Kael noted. He raised a hand, testing his Technomancy on a biological target. He sensed the tiny electrical impulses traveling through the boss's nervous system. With a sharp flick of his will, he "overloaded" the beast's motor functions.
The Mire-Crag seized up, its massive limbs twitching uncontrollably as its own bio-electricity turned against it. It was paralyzed, a puppet with its strings tangled.
Finally, Kael tested his Thunder Authority. He didn't just flicker; he channeled the voltage through the Midnight Fang. He drew the blade, and the charcoal steel vanished behind a pillar of blinding, white-hot plasma.
"End of the experiment," Kael said.
He moved. There was no sound, only the sudden smell of ozone. He appeared on the far side of the lake, sheathing his blade with a soft click.
Behind him, the Elder Mire-Crag didn't just fall. The lightning had vaporized the water in its path, and the boss's massive body had been sliced into eight perfect segments, the edges of the quartz shell cauterized and glowing red from the heat.
[YOU HAVE DEFEATED: ELDER MIRE-CRAG (BOSS) - OVERKILL]
[EXP GAINED: 500]
[LEVEL UP: 2 -> 5]
[BOSS CORES ACQUIRED: 5 (RANK-F)]
The massive violet core of the boss floated in the air, vibrating with dense energy. Kael reached out, and his Divinity greedily inhaled the essence.
[CORE PROGRESSION: 12 / 50]
[THUNDER AUTHORITY: VOLTAGE +15%]
Kael felt his bones hum. His Strength and Agility ticked upward as his body absorbed the high-grade mass. He wasn't even breathing hard. The "Boss" of the town's most dangerous dungeon had been nothing more than a training dummy.
He looked toward the exit portal, his Divine Sense already searching the world outside for the next meal.
The massive segments of the Elder Mire-Crag lay cooling in the stagnant water. Kael knelt, his Technomancy scanning the internal composition of the beast to identify the most valuable biological components.
Boss Loot: Elder Mire-Crag
1x Pure Mana-Quartz Heart: A crystalline core used for high-tier mana batteries.
2x Crag-Pincers: Six-foot obsidian blades capable of slicing through reinforced steel.
20kg of Azure Shell-Plates: Lightweight, lightning-resistant armor material.
Elder Mire-Meat: High-density muscle tissue (Consumed by Kael for +2 Vitality).
Kael hoisted the heavy mesh bag of loot over his shoulder. He didn't head back to the city. His Divine Sense felt the "static" of four other stable dungeons in the surrounding coastal cliffs. He had a month of infinite mana; he wasn't going to waste a single hour.
The Blitz: Four Consecutive Clears
1. The Howling Crevice (Rank-F)
Boss: Shadow-Stalker Alpha (Giant bat-like monstrosity).
Loot:4x Sonic Membranes, 1x Alpha Fang, 8x F-Rank Cores.
Outcome: Kael used Thunder Dash to decapitate the Alpha mid-air.
2. The Iron-Bark Grove (Rank-F)
Boss: Ancient Treant Seedling (Corrupted elemental tree).
Loot:10x Iron-Wood Logs, 1x Heart of Oak (Rare Alchemical), 10x F-Rank Cores.
Outcome: Kael incinerated the core with a Voltage Overload from his palm.
3. The Sunless Tide-Pools (Rank-F)
Boss: Abyssal Eel-King (Electric-type aquatic serpent).
Loot:1x Voltage Skin (Waterproof), 2x Eel-Fangs, 9x F-Rank Cores.
Outcome: Kael stood in the water and simply "absorbed" the boss's electrical attacks, reversing the polarity to explode the creature from within.
4. The Obsidian Vault (Rank-F)
Boss: Stone-Gargoyle Sentinel (Animated mana-statue).
Loot:5x Obsidian Shards, 1x Sentinel Eye (Detection Item), 11x F-Rank Cores.
Outcome: One punch. Kael's Strength (25) shattered the stone construct into dust.
The Evolution: Core Progression 50/50
As Kael crushed the final core from the Obsidian Vault, a golden pillar of light erupted from his chest, piercing the ceiling of the dungeon. The "Vessel" of his mortal body finally expanded to accommodate the divinity within.
His skin momentarily turned into translucent gold, and the smell of ozone filled the air so intensely that the surrounding stone began to melt. The Seal on the Zeus Bloodline thinned, unlocking the E-Rank Vessel.
[SYSTEM NOTIFICATION]
[CORE PROGRESSION: 50/50 REACHED]
[VESSEL RANK UP: F -> E]
[BLOODLINE EVOLUTION: LESSER GOD (STRIKER STAGE)]
[UPDATED STATUS WINDOW]
Name: Kael Thorne
Level: 12 (Rank: E)
Physique:Thunder Divine Body (Grade: Primordial)
[STATISTICS]
Strength: 45 (+20 from Evolution)
Agility: 50 (+20 from Evolution)
Vitality: 62 (+22 from Consuming Monster Essence)
Intelligence: 55
Senses: 45
[ENERGY ATTRIBUTES]
Divinity: 1 Point
Mana Capacity: [1 Month Reservoir]
Mana Regeneration:INFINITE (30 Days Remaining)
[ACTIVE SKILLS]
Technomancy (Divine): Total authority over electrical currents.
Divine Sense (Divine): Threat detection (Self/Family).
Thunder Dash (Rank: E): Flickers up to 30 meters. Can now be chained 3 times.
NEW: Heaven's Judgment (Rank: E): Discharge a concentrated bolt of 50,000 volts from the fingertips.
Kael stood in the ruins of the last dungeon, his eyes glowing with a steady, terrifying gold. He felt lighter, faster, and more dangerous than any "E-Rank" adventurer in history. He looked at the mountain of loot piled at his feet. It was time to go back to the Guild and show them what a "Zero" could do in a single afternoon.
The sun was setting over the Pacific, casting long, bruised-purple shadows across Silverport as Kael walked back toward the city center. He wasn't just walking; he was a literal mountain of high-grade monster parts. The massive mesh bag slung over his shoulder should have crushed a normal human, but with his Strength (45) and Vitality (62), Kael moved with the easy grace of a man carrying a bag of groceries.
When Kael kicked open the heavy glass doors of the Adventurer's Guild, the evening crowd of veterans was just settling in. The noise died down instantly as the smell of ozone and damp monster hide filled the lobby.
Kael walked straight to the main desk and dropped the bag. THOOM. The mahogany counter groaned under the weight.
Sarah, the receptionist from the morning, nearly jumped out of her chair. She looked at the blood-stained bag, then at Kael's glowing, golden eyes. "Mr. Thorne? You... you just registered four hours ago."
"I did five runs," Kael said calmly. "I need a valuation."
Sarah's hands trembled as she began pulling items from the bag. The lobby went deathly silent as the Elder Mire-Crag Pincers and the Shadow-Stalker Alpha Fang were laid out on the counter.
"This... this is the Mire-Crag Boss," a Rank-D adventurer whispered from the back, his face turning pale. "That thing wiped out a five-man squad last week."
Sarah's terminal chirped rapidly as she scanned the materials.
Itemized Valuation
Mire-Crag Pincers & Shell (1 Set): $8,000
High-tier structural components recovered in prime condition.
Shadow-Stalker Alpha Fang (1 Unit): $4,500
A rare offensive material sourced from a pack leader.
Iron-Wood Logs (10 Units): $3,000
High-grade timber valued at $300 per unit.
Abyssal Eel-King Skin (1 Unit): $6,000
Premium aquatic hide with significant market demand.
Sentinel Eye (1 Unit): $5,500
A specialized core harvested from the Obsidian Vault.
Misc. F-Rank Parts/Fragments (Bulk): $2,000
Assorted low-tier loot gathered during the expedition.
Total Gross Income: $29,000
"Twenty-nine thousand dollars," Sarah whispered, her voice cracking. "In four hours. Mr. Thorne... even B-Rankers don't have a turnover rate this high."
"Just transfer it," Kael said. He didn't care about the fame. He just wanted the resources.
A golden thread of data jumped from his mind to the terminal.
[TRANSACTION COMPLETE: +$29,000.00]
[NEW BALANCE: $31,012.00]
Dinner: The Golden Hour
When Kael arrived home, the smell of roasting chicken and rosemary filled the house. His Divine Sense told him the mood inside was anxious—his parents had been watching the clock.
He stepped into the dining room and didn't say a word. He simply took his phone and slid it across the table toward his father. On the screen was the bank notification: Balance: $31,012.
Thomas nearly dropped his fork. Elena leaned over, her eyes widening. "Kael... what is this? Did you... did you find a treasure chest?"
"I found a career," Kael said, sitting down and pulling a massive plate of chicken toward him. His Thunder Divine Body was screaming for protein after the evolution. "That's from five F-Rank dungeons. I cleared them all this afternoon."
"Thirty thousand dollars in a day?" Maya gasped, leaning in. "Kael, that's more than Dad makes in four months at the garage!"
"It means," Kael said, looking his father in the eye, "that you don't have to take those double shifts anymore, Dad. And Mom, you can buy those specialized medical texts you wanted for the library. We aren't just surviving anymore."
Thomas looked at the phone, then at his son. For the first time in years, the tension in his shoulders vanished. He let out a booming laugh, his eyes shimmering. "I always knew you were a shark, Kael. But I didn't think you'd eat the whole ocean in one day!"
"To Kael!" Elena cried, raising her water glass with a beaming smile. "To our son, the Vanguard!"
"To the Vanguard!" Maya cheered, kicking Kael under the table. "But if you're this rich, you're definitely paying for my new drone parts tomorrow!"
Kael laughed—a deep, genuine sound. As he ate, he felt the Divine Magnetism in his chest pulling infinite mana from the air, and the warmth of his family's happiness filling the room. He was a God, yes—but being a son felt even better.