Yandere Monster Evolution: My Blind Wife Will Become a Demonic Queen

The three Ash Stalkers growled in unison, their glowing red eyes locked onto us. Smoke curled from their rock-like nostrils, and their tail-blades whipped back and forth, cutting small grooves into the ash.

I slid my iron dagger from my belt. The cold metal handle felt familiar in my grip, but I knew my limits. If I tried to take all three of these C-rank beasts head-on with pure strength, I would burn through my mana in less than two minutes.

"Woo Jin," Carmilla spoke softly beside me.

She reached beneath her dark grey hoodie. From a hidden strap along her waist, she pulled out a long, narrow object wrapped in dark cloth. With a quick flick of her wrist, the cloth fell away, revealing a sleek, jet-black arming sword.

"You brought that with you?" I asked, keeping my eyes fixed on the monsters.

"I never leave home without a blade," Carmilla replied calmly.

She took a single step forward, unfastening her sunglasses and tossing them onto a nearby stone block. As soon as her hands gripped the black hilt, tiny red sparks of lightning began to dance along the dark steel. The quiet, hidden mana she had been suppressing suddenly flickered like a controlled flame.

SKREEEEEECH!

The lead Ash Stalker lost its patience. It launched itself off the stone street, its four legs kicking up a cloud of grey dust. It flew through the air straight toward my neck, its jagged bone shoulder-blades extended like spears.

I didn’t try to overpower it.

Instead, I used my brain. I dropped flat onto my back against the soft ash, letting the monster sail right over me. As it passed inches above my face, I raised my iron dagger and drove the point straight into the soft, unarmored joint of its rear leg.

CRACK!

The beast let out a sharp YELP as its leg buckled. It crashed awkwardly onto the stone pavement behind me, tumbling through the dust.

"Now, Carmilla!" I shouted, rolling back onto my feet.

Carmilla was already moving.

She didn’t run; she glided across the ash like a shadow. The red lightning around her black sword crackled louder, filling the quiet street with a sharp, static hum. Before the second and third beasts could flank her, Carmilla swung her blade in a smooth, low circle.

THWIP-CRACKLE!

A crescent arc of crimson lightning flew from her black sword. It struck the ground right in front of the second monster. The sudden flash of red light and the loud crack of thunder blinded the beast instantly. It shrieked in confusion, thrashing its heavy tail blindly in the wrong direction.

The third monster tried to take advantage of her open stance. It lunged from the left side, aiming its bone blade straight at Carmilla’s ribs.

Carmilla didn’t even turn her body. She had already calculated the angle.

She lifted her black sword vertically, catching the monster’s jagged bone blade right on the sweet spot near her hilt.

CLANG!

Sparks erupted into the grey air. The brute force of the beast’s lunge couldn’t move her arm an inch. Carmilla’s red eyes flared with a cold, predatory light under her beanie.

"Weak," Carmilla whispered.

With a sudden twist of her wrist, she channelled a heavy surge of red lightning through the black steel. The electric voltage surged directly into the monster’s bone blade, frying its internal nervous system in half a second.

ZZZZZZZT-BOOM!

The third beast stiffened up completely, smoke pouring from its eyes before it collapsed flat onto its face, stone armor cracking open like dry clay.

Meanwhile, the first beast—the one I had crippled in the leg—scrambled back up onto three feet. It realized Carmilla was far too dangerous, so it turned its glowing red eyes back toward me, growling savagely. It thought I was the easy prey.

’Good,’ I thought, a small grin touching my lips under my face mask. ’Think I’m weak. That makes you predictable.’

The beast feinted to the left, trying to trick me into dodging early.

I pretended to fall for it. I stumbled slightly to the right, intentionally leaving my left side wide open. The monster’s eyes lit up with predatory glee. It pounced with all its remaining strength, aiming its sharp claws straight for my open ribs.

The moment its feet left the ground, I stopped my stumble.

I activated my mana footwork, spinning sharply on my heel to step inside its attack radius. The monster’s claws swept through empty air. Before it could land, I grabbed its thick stone tail with my bare left hand and pulled with all my weight, throwing the beast off balance mid-air!

THUD!

The monster slammed side-first into the concrete ground right at my feet.

Without giving it a chance to breathe, I flipped my iron dagger into a reverse grip and drove the blade straight down into the glowing red core behind its ear.

PZZZZT!

The red light in its eyes flickered out. The beast went limp, its stone body rapidly cooling into lifeless grey rock.

Over by the ruined wall, the second beast—the one Carmilla had blinded with red lightning—was still staggering around in circles, trying to regain its balance.

Carmilla walked over to it with calm, steady footsteps. She held her black sword at her side, the crimson sparks slowly fading back into the dark metal. She didn’t even bother using a high-tier skill. She simply delivered a clean, effortless thrust straight through the back of its skull.

THWIP.

The final Ash Stalker collapsed into the ash.

Silence returned to the ruined street of Sector B-4. The cold wind whistled softly through the broken skyscrapers once again, blowing away the smell of burnt monster blood.

I wiped the black oil off my iron dagger using a piece of rag and sheathed it back into my belt. I was breathing a little heavily, but my body felt okay.

"Nice work with the lightning," I said, walking up to her. "That flash technique completely threw off its spatial awareness."

Carmilla wiped her black blade clean against her sleeve before wrapping it back up in the dark cloth and slipping it seamlessly into her hidden waist strap. She pulled her dark sunglasses back over her red eyes and adjusted her beanie.

"It is a basic royal guard stance," Carmilla replied softly. "My instructor taught me that beasts with glowing eyes rely heavily on light contrast. Blind them first, and they become helpless."

"Brains over brawn," I smiled, patting her shoulder. "That’s how we survive in high-rank zones."

We resumed our trek toward the central stone fortress.

As we walked through the dead city, I kept my eyes wide open, constantly scanning the ruined rooftops and empty alleyways.

Sector B-4 wasn’t just dangerous because of monsters. The real threat was other humans. Underground mercenaries who frequented these gray zones were notorious for waiting until a party retrieved a relic before striking them from behind.

By 1:30 PM, we stood right in front of the grand stone fortress.

The building was massive. Black volcanic blocks were stacked fifty feet high, reinforced with ancient vampiric runes that glowed with a faint, dying violet light. The main iron gates were smashed open, leaving a dark, gaping entrance into the interior.

We stepped through the archway into the main hall.

The air inside was freezing cold and smelled of old stone, dried moss, and stagnant mana. Giant pillars held up the vaulted ceiling, casting long, dark shadows across the dusty floorboards.

"The royal vault is beneath the throne room," Carmilla whispered, pointing toward a grand set of double doors at the back of the hall.

We approached the double doors carefully. I placed my hands against the heavy oak wood and pushed them open.

CREEEEAK.

The throne room was immense. At the far end of the long hall sat a high stone throne carved with dragon scales. But what caught my attention wasn’t the throne.

Sitting on a marble pedestal directly in front of the dais was a heavy, square steel chest. The lock on the front of the chest was a massive, intricate mechanism made of four rotating silver rings, each marked with ancient vampiric symbols.

"There it is," I said, stepping closer. "The chest holding the Crimson Heart."

Carmilla walked up beside me, her eyes locking onto the silver ring mechanism. Her eyebrows furrowed slightly under her beanie.

"This is a Blood-Seal Puzzle lock," Carmilla noted, leaning down to inspect the symbols. "In our realm, these were used to secure high-value treasuries. If you try to force it open with violence or pick the lock with an iron wire, the inner mechanism triggers a hidden mana explosion that destroys everything inside the box."

I knelt down in front of the chest, examining the four silver rings. "Vane said his four-man mercenary party came here last week. They probably tried to break it open by force and got wiped out."

"Can you solve it, Woo Jin?" Carmilla asked.

"I don’t know the vampiric symbols," I admitted, looking closely at the carved characters. "Can you read them?"

Carmilla leaned closer, her gloved fingers lightly brushing the cold silver rings. "The first ring says ’Night’. The second says ’Blood’. The third says ’Crown’. But the fourth ring... the symbol is worn out. I cannot read the word."

I stared at the four rings, my brain working at top speed.

This wasn’t just a puzzle; it was a psychological trap designed by ancient engineers.

’Night, Blood, Crown...’ I thought, running the words through my head. ’A royal treasury lock wouldn’t use a random word for the final ring. It has to follow a logical pattern of royal duty.’

"Carmilla," I asked, looking up at her. "What was the motto of your family’s royal lineage? What comes after Night, Blood, and Crown?"

Carmilla blinked in surprise. She stayed silent for two seconds, her mind traveling back to her childhood inside the castle walls.

"Night protects the Blood," Carmilla quoted softly, her voice carrying a touch of distant memory. "Blood holds the Crown. The Crown serves the... ’People’."

"People," I repeated.

I looked at the options available on the fourth silver ring. There were five different worn-out symbols. I carefully examined the subtle grooves on each one until I found the character for ’People’—or in human terms, ’Loyalty’.

I gripped the fourth silver ring and turned it slowly.

CLICK. CLICK. CLICK.

The fourth symbol locked into place with a sharp metallic snap.

For a second, nothing happened. The heavy steel chest remained dead silent.

Then, a low, mechanical hum echoed from inside the box.

CLACK-RATTLE-CLICK!

The heavy four-way steel latch on the front of the chest unlocked itself, popping open an inch!

Carmilla let out a quiet gasp of surprise. "You actually solved it."

"Teamwork," I smiled, lifting the heavy steel lid of the chest.

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