Demonic Witches Harem: Having Descendants Make Me Overpowered!-Chapter 82: Mana Core Harvest

Claude drifted through the white expanse of the sky, his dark robes flowing with the gentle currents. Beside him, Morion hovered with a bright grin, her excitement palpable.

"Father, I've already gathered strong cacodemons and beasts from Malgrave Mountain!" she declared eagerly.

"Do you want me to kill them all?" Her crimson eyes gleamed as if she found an interesting toy.

Claude narrowed at the distant mass of monsters below. "No need, Morion. I need to fill my mana pool as quickly as possible so I can evolve." His voice was calm, but his aura pulsed with hunger.

Murmuring under his breath, he activated his magic. "Abyssal Creation—Erebus Sword."

Darkness coalesced in his hand, forming into a long, menacing sword wreathed in shadows.

Without hesitation, he dropped from the sky, plummeting toward the monstrous horde waiting below.

The battlefield was chaos. Creatures of all shapes and sizes snarled and shrieked, their grotesque forms shifting under the dim sunlight.

A giant white bear, its towering body covered in razor-sharp thorns, let out an earsplitting roar before firing a volley of its deadly spines.

Claude moved like a specter. Some he dodged, some he slashed aside with a single flick of his sword.

He closed the distance in a heartbeat, his body twisting midair as he plunged his blade through the beast's skull.

Blood sprayed, but the monster barely had time to react before Claude ripped through its body, splitting it clean in half.

A cold voice echoed in his mind.

[You have slain a cacodemon and multiple beasts.]

[Would you like me to extract their mana cores?]

Claude barely spared a thought. "Yeah, Keira, just do it. I'm busy."

Dark flames surged along his sword, the Abyssal Fire consuming everything in its path.

Monsters howled in agony, their flesh burning away as he carved through them mercilessly. Some tried to flee, but Claude's voice rang across the battlefield.

"Morion! Don't let them escape!"

Morion's delighted laughter rang in the air as she lifted a hand. "Shadow Entrapment."

Dark strings shot forth like living tendrils, snaring the fleeing creatures mid-stride. The moment they struggled, the shadows constricted, holding them in place.

Claude wasted no time. He moved like a phantom, flickering in and out of sight as he tore through the immobilized monsters.

Limbs flew, bodies crumpled, and soon, only a sea of dismembered corpses remained.

A small flicker of movement came from inside his pocket.

A dark cat emerged, its ethereal form floating before it landed gracefully atop a heap of dead monsters. Its gleaming eyes narrowed as the corpses began to exude a dark aura.

It opened its mouth, absorbing the lingering essence, swiftly extracting the mana cores from the fallen cacodemons and beasts.

Claude exhaled, flicking the blood off his blade.

"Tch. I thought the cacodemons and beasts inside Malgrave Mountain were supposed to be strong." His tone was flat, filled with disappointment.

None of them had the potential to become his servant. And that was what truly irked him.

Ever since his death severed his bonds with all but Sun, he had been searching for a worthy servant to replace what he lost. Yet all he found were weaklings, not fit to serve under him.

"Hah, my mother also keeps asking about Chesire, that white cat..."

Still, he sighed again, for what felt like the hundredth time today.

[Ding!]

[Extraction complete!]

[Mana Cores Extracted: 10,500]

[Mana Pool Updated: 215,000 → 225,500]

[Mana Required for Next Evolution: 274,500]

Claude exhaled heavily again, planting himself onto the cooling corpse of a fallen beast.

Mana pools were vastly different from ordinary mana reserves.

Unlike regular magic, which could regenerate over time, a mana pool could only be replenished through extraction—either from others or from oneself.

However, self-extraction left the user completely drained for an entire day, making it a dangerous gamble.

And more importantly, mana pools were essential for evolution.

That was why so few races ever reached five-star evolution. The sheer amount of mana pool required was beyond most beings' reach.

Claude let out a deep sigh.

[What's wrong, Claude? Are you worried about the Everbright Church's movements?]

Keira's voice echoed in his mind.

Recently, Shawn had relayed concerning news: The Everbright Church had begun negotiations with Continvar Kingdom, seeking access to Malgrave Mountain. Of course, the Queen had refused outright.

But Claude knew.

War was inevitable.

"The war… will happen sooner than I thought," he muttered.

Morion, still sitting beside him, tilted her head. "Really? Isn't that exciting, Father? Mother always told me I was born for this—to conquer the world! So, I'll be really useful for you!"

Claude chuckled, ruffling her dark hair.

"We're still not ready." His voice was calm, yet edged with frustration.

Layla was right. The pregnancy policy took too long to yield results. Not to mention, his bloodline skill only activated if he had children—which also required time.

He needed a more immediate solution.

As he mulled over his options, Keira's voice rang in his head once more.

[Why don't you buy slaves from another kingdom? Our kingdom's envoy could handle it.]

Claude's eyes widened slightly.

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"Right… Why didn't I think of that?"

A slow smirk curled on his lips.

Boosting the population through policy was one thing—but acquiring slaves would instantly increase human resources. He could use it for war and as serf!

"No… Forget buying. Let's just take as many people as we can and make them our slaves."

Keira purred approvingly.

"Our military hasn't been doing much lately, so I'm sure they'll be thrilled when I announce a small-scale colonization mission."

Claude rose to his feet, turning to Morion.

"Morion, I need you to find me a strong cacodemon that can serve as a spy—someone intelligent, preferably one that dominates the skies."

Morion's eyes lit up with excitement. "Of course, Father! I'll do my best!"

Without another word, she shifted into her small black dragon form and soared into the distance, eager to complete her mission.

Claude then shifted his focus. "Keira, inform William to gather all generals of the Dark Elysium Army and also our envoy from the nearby kingdom."

[Yes, Claude! Right away!]

The dark cat vanished in a wisp of shadow.

Claude smirked, his mood drastically improving.

He had a plan. And now, it was time to set it into motion.

His footsteps were steady as he made his way back toward Elysium.

But before that…

He still needed to farm more monsters and fill his mana pool.