Brain in a Jar Gets Jealous

As soon as we got back to the Hideout, Eunseo hurriedly hooked the glass jar labeled “Hyena” into the closed server.

Hundreds of microscopic electrodes latched onto the surface of the brain.

The monitor filled with chaotic, indecipherable waveforms, but no meaningful data seemed to be coming out.

Eunseo frowned and tapped rapidly at the terminal.

From the side, Dayoon, who had been cleaning her shotgun, spoke up casually.

“Maybe that’s why Hyena’s goons were going completely insane stealing all that metalware? They were trying to build the perfect body to plug that brain back into. Like scavengers collecting parts.”

Dayoon’s hypothesis made a lot of sense. I found myself nodding along.

If Hyena wasn’t just an organization name but the actual boss’s name, then they might have been trying to resurrect the Demon King. All those high-performance computing modules, top-grade artificial muscles, and specially treated metalware they’d been hoarding—if every single component had been meant for the owner of the brain floating in that jar, the situation had just become far more serious.

Right then, Chaei, who had been tinkering with her rifle in the corner, raised her voice anxiously.

“Wait a second, Daddy! If Hyena’s brats find out the boss’s brain is here, what do we do, nya? They’re crawling all over the city—won’t they find this place soon too, nya? We need to beef up the Hideout’s defenses right meow!”

The air in the room grew heavy at Chaei’s words.

If our reasoning was correct, we had essentially stolen the boss’s life-support device and the organization’s master key. It wouldn’t be strange for enemies to come bursting in at any moment.

“Chaei’s right. They’re probably losing their minds right now. Someone just stole the Demon King they were about to resurrect.”

I stared at the monitors. The feeds from the surveillance drones around ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠the Hideout still showed no unusual movement. But a strange sense of unease and pressure weighed down on my entire body.

“Eunseo, overclock every external security system. Increase the stealth field output and double the thermal sensor range. Chaei and Dayoon, swap out the ammo drums on the auto-turrets at the entrance and oil them so they don’t jam.”

At my orders, the girls moved in perfect sync.

But the biggest problem was the glass jar in my arms, twitching unpleasantly.

“Daddy, there’s something weird.”

Eunseo pointed at a spot on the monitor. A faint signal radiating from Hyena’s brain was being graphed there—extremely regular, yet incredibly weak waveforms.

“This… looks like some kind of tracking signal, Daddy. The frequency was so low I thought it was just noise until now. But it’s transmitting outward at 1.5-second intervals.”

Everyone froze.

A tracking signal. That meant the entire time we’d been traveling from the factory to here—and even at this very moment—we’d been live-streaming our location to Hyena’s remnants.

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“Cut it off immediately! Eunseo, can you do it?”

“I’ll try, but this signal is being generated at the hardware level. Software can’t block it. We’d either have to cover the jar with lead plating or… completely wake the brain and break the loop.”

Eunseo’s fingers flew across the terminal at blinding speed. Beads of sweat rolled down her chin from the tension and dripped onto the keyboard.

“Shit, they’re coming!”

Dayoon shouted while watching the surveillance feed. ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠Several black vans were captured on the closed-circuit cameras covering the approach routes to the Hideout, screeching to aggressive stops. Armed operatives poured out of the vehicles and began searching for the location of the signal from the jar. Their red optical lenses glittered like dozens of eyes in the darkness.

“We don’t have time. We have to wake the brain. As long as that signal keeps broadcasting, they’ll keep swarming in like flies.”

Minji approached my side and stared intently at the glass jar.

“Taehun, there’s only one way. We have to inject powerful bio-energy directly into the brain to forcibly drag the ego back to the surface.”

Minji’s gaze drifted to my crotch.

The sound of the enemies’ combat boots seemed to echo through the monitors and into my ears. We were backed into a corner.

Either we woke Hyena’s brain and stopped the tracking signal, or we became prey right here.

Minji slowly approached the glass tank and gazed at the brain submerged inside.

“It can’t be electricity. It has to be living energy that flows through the neural network. This brain is rejecting artificial electrical signals. The stimulus needs to be strong and positive. Strong enough to make the brain want to reconnect with the world… Yeah, something that makes dopamine explode. We need to inject the essence of life itself.”

Minji’s eyes slowly, but very deliberately, dropped to my zipper.

She wasn’t the only one who understood the meaning behind that look. The air inside the Hideout instantly grew scorching hot. Dayoon, Chaei, and Eunseo’s eyes all turned toward me at the same time, as if they’d made a pact.

“W-what…”

Every woman except me gathered in front of me like it had been planned.

“Oppa. You know that the cum produced in your balls isn’t just a bunch of reproductive cells, right? Just receiving your load lets us break through metalware limits, purifies neural paralysis, and even amplifies visual circuits dozens of times… So it’s pretty clear what we need to do now, isn’t it?”

I could only nod.

The moment I did, the four women huddled together in a circle, heads almost touching.

“Alright then, we need to decide who gets to connect first.”

At Minji’s suggestion, sparks flew in all four women’s eyes. They were usually comrades who would die for one another, but when it came to connecting with me, there was zero room for compromise. Especially not this time, when there was the noble cause of rebooting the brain.

“It should be me! I burned through a ton of energy in the last fight. I need the refill the most—I’m the perfect candidate!”

Dayoon shot her hand up first. Chaei whipped her head around and shot back.

“Big Mommy already got the detox buff earlier, nya! I used every ounce of my strength sniping from that chimney, nya! I’m the one who needs it most right meow!”

“What are you talking about? Did you forget who handled the system link? I can deliver the energy the most directly!”

Even Eunseo jumped in, and the Hideout instantly turned into a chaotic mess.

I felt embarrassed by the situation, yet the heavy heat in my lower body grew from the girls’ burning competitive spirit.

In the end, Minji stepped forward to settle things.

“Okay, everyone calm down. We don’t have time, so let’s decide the fairest way possible.”

The fairest way turned out to be… rock-paper-scissors.

“Rock, paper, scissors!”

After the short, sharp shout, the winner was decided.

“Yay! I won! Daddy, did you see? I really am a lucky girl!”

Eunseo clenched her fists and jumped up and down with joy. Every time she bounced, her smooth legs gleaming beneath the Cyber Suit caught the light.

The defeated Dayoon, Chaei, and Minji pouted, unable to hide their disappointment, but a promise was a promise.

“Hmph… Mommy, you have to trade with me later, nya?”

Chaei grumbled with envy in her voice, but Eunseo ignored her completely and clung tightly to my arm. Her soft breasts pressed firmly against my forearm.

“So, shall we get started right away, Daddy? We need to inject some really hot energy into the brain, right?”

The moment Eunseo finished speaking, Minji connected one of the electrodes linked to the brain to the neural port at the back of Eunseo’s neck. Now every bit of pleasure Eunseo felt and every ounce of energy she received from me would flow straight into the brain inside the jar in real time.

Eunseo looked up at me with eyes full of both excitement and tension.

“Daddy, I have a request. Today… I want to do it while being filmed.”

It was a completely unexpected demand.

Even as her face flushed bright red with embarrassment, Eunseo pointed at the high-performance security cameras placed throughout the Hideout and the camcorder sitting on the desk.

“It’s not like the footage is going outside, and no one else will see it inside our Hideout anyway. But… just thinking about those camera lenses scanning every inch of me makes my pussy tingle so bad I can’t stand it. I think I’ll get way more turned on. Hehe. And… if my dopamine explodes like that, it should transmit through the neural link to the brain even better… Can’t I, Daddy?”

I was speechless for a moment… but after seeing Eunseo’s pitiful, pleading eyes, I decided to accept her request.

Delighted by my answer, Eunseo personally adjusted the camera angles herself. One pointed straight at the bed, another looked down from the ceiling, and the last was fixed in a position for a perfect close-up of our most intimate joining point.

All the cameras lit up their red “recording” lights at once and began capturing Eunseo’s entire body.

In front of the cameras, Eunseo spread her legs in an M-shape like she was showing off, twirling a strand of hair around her finger as she seduced me.

“Look, Daddy. The lens is catching every little twitch of my pussy right now. Just thinking about you watching this alone later… I’m already soaking wet down there.”

With those words, Eunseo pulled down my pants and took my cock deep into her mouth in one go. She deliberately stared straight into the camera lens while shoving my thick shaft all the way to the back of her throat, as if showing off her lewd behavior to whoever might be watching beyond the lens.

“Mmph, ugh… haa, slurp… It’s all getting filmed… how I’m eating Daddy’s cock. Can you see how my throat is stuffed full?”

Even the thick saliva dripping from the corners of her mouth from all the stimulation was captured perfectly by the cameras. Eunseo licked the saliva from around her lips and gave the camera a satisfied smile.

I laid Eunseo down on the bed and immediately drove into her in missionary position. The cameras obsessively scanned from the tips of her toes to her flushed, pleasure-drunk face and her violently bouncing breasts.

The fact that every single droplet of sweat on her smooth skin was being recorded in high definition drove Eunseo wild as she bucked her hips like crazy.

“Aah! Yes, harder… fuck me harder! I want every second of Daddy’s cock tearing up my insides to be recorded! So I can watch it later and masturbate all over again!”

I changed positions like a professional porn actor and took her from behind. Every time her firm ass slapped against my pelvis, the wet, fleshy sound echoed through the Hideout. The cameras automatically zoomed in on that obscene joining point.

Maybe because she was conscious of the red-glowing lenses right behind her, Eunseo’s inner walls clamped down on my shaft hotter and tighter than ever. The precum that splashed onto her ass glittered like jewels under the lights.

“Aaaahngh! It feels like someone’s watching from behind… it’s so good! Daddy, right there! Pound me harder right there! Deeper so the camera can film all the way inside!”

The final position was stand-and-carry. I gripped Eunseo’s thighs tightly, lifted her into the air, and thrust up into her mercilessly. Hanging in midair while desperately clinging to her own thighs, Eunseo cried out in ecstasy. The sight of her own disheveled reflection in the camera lenses fed her an almost lethal dose of dopamine.

At the moment of climax, I aimed straight for the entrance of her womb and pumped a massive load of thick, hot cum deep inside her.

“Aaaahhhngh! Daddy… it’s coming in! Something huge is pouring in! Daddy’s cum… your cum energy… it’s reaching the brain!”

Eunseo’s body arched and convulsed. Her pupils dilated completely, as if she’d whiteouted.

Right after our intense sex ended, the previously quiet monitors began flashing wildly. The brainwave graph shot upward with amplitudes never seen before. The dormant ego inside the brain had been forcibly awakened by the powerful dopamine rush we’d created together and the high-concentration cum energy I’d just pumped out.

“Reboot successful! The brain has resumed computation!”

Minji’s shout cut through the heated air of the Hideout.

Even though Eunseo was completely naked, thighs still dripping with fresh cum from the sex that had just ended, she forgot all shame and rushed straight to the terminal. Her long hair was a sweaty mess and steam still rose from her heated body.

Suppressing her ragged breathing, Eunseo activated the decoding program that converted the brain’s complex electrical signals into text. Everyone in the Hideout swallowed dryly as they stared at the monitor.

The legendary hacker and boss of the Hyena organization—the one who had abandoned her physical body to choose eternal life inside the network. After decades of silence, what would be the first words she uttered to the world?

A clue to some world-shaking conspiracy? Or a curse aimed at us for stealing her?

The tension was so thick it felt like even the machines inside the Hideout had held their breath. Finally, a cursor blinked on the black screen, and white letters began to appear one slow character at a time.