The first thing I tasted was blood.
The second was dirt.
And the third… was fear.
It was raining hard. My whole body felt heavy, like my bones were full of lead. I could hear the roar of traffic somewhere above me, but I was lying in a dark alley, my chest torn open.
I'd been stabbed i knew it. I could feel the knife wound burning.
"Damn it…" I coughed, tasting more blood. My vision blurred. "Is this… how I die?"
The truth was, I wasn't a hero. I wasn't a fighter. I was just some underpaid delivery guy who got caught up in the wrong place at the wrong time.
A shadow moved above me. A man's voice: "Serves you right, asshole."
Then nothing.
The world went dark.
When I opened my eyes again, there was no rain. No alley.
Just an endless black void with tiny red stars floating in every direction.
And… someone was sitting in my lap.
At first, I thought my brain was making things up because of blood loss. But no she was real. I could feel her. Warm. Soft. Too soft.
She was the most dangerously beautiful woman I'd ever seen.
Long golden hair spilling like liquid light down her back.
Crimson eyes glowing faintly, locking onto mine.
Skin like pale silk and absolutely nothing covering it.
"You died," she said simply. Her voice was low, smooth, and had that kind of tone that made your spine tingle.
"I… died?" I muttered, still in a daze.
She smirked. "Yes. But your soul caught my attention. You're… interesting."
I tried to move, but her hands slid up my chest and held me in place. Her nails were long and sharp, and her touch was strangely electric.
"W-Who are you?"
She leaned closer until her lips were almost touching my ear. "Lilith. Prime Succubus. Queen of the Blackflame Abyss. And perhaps… your new master."
"M-Master? Hold on—"
Her legs shifted, straddling me more firmly. My body reacted before my brain could stop it.
Her smile widened. "Tell me, mortal. Do you want to live again?"
Every instinct in my body screamed at me to say yes. But my pride made me hesitate. "And if I say no?"
"Then I send you into the void. You vanish forever. No heaven. No hell. Just… gone."
A shiver went through me. "...And if I say yes?"
Her eyes glowed brighter. "Then you will serve me. You will carry my mark. And you will bear the Demonic Dual Cultivation System my greatest gift… and my curse."
Before I could answer, she pressed a single finger to my lips. "But there is… an oath ritual."
[R18 Scene here - here is where Lilith would perform a very intimate and binding ritual, involving physical contact and magical essence transfer, marking the MC permanently as her chosen host.]
When she finally pulled away, my heart was racing. I could feel something inside me a heat in my chest, and a strange hunger in my mind.
A glowing blue screen appeared in front of my eyes:
[Demonic Dual Cultivation System Activated]
Host: ??
Level: 0
Core Energy: 0/100
Rank: Mortal Body
Main Quest: Seduce, Conquer, Dominate
Skill Unlocked: [Euphoria Drain] — Absorb power during intimacy to increase cultivation.
I stared. "This… is a joke, right?"
Her smile vanished. "Do you think I joke?" Her hand gripped my chin, forcing me to look into her eyes. "Survive by the System… or die by it."
She kissed my forehead and the world ripped apart.
I woke to shouting.
"Help! Somebody help me!"
I was lying in a filthy alley, this time under an orange-tinted sky. The cobblestones were wet from rain, and the air smelled of smoke and something sweet.
I sat up fast and realized I was naked again.
A soft chime echoed in my head.
[Side Quest: First Taste]
Rescue the damsel, claim your reward.
Reward: +10 Core Energy, Skill Unlock.
Failure: -10 Core Energy, System Lock for 24 hours.
At the end of the alley, three big guys had a girl cornered. She couldn't have been more than nineteen long black hair, pale skin, a white dress ripped at the shoulder.
"Back off," I said, stepping forward.
The biggest man turned, sneering. "Look at this idiot. Where are your clothes, freak?"
"Don't need them to kick your ass," I said.
[Fight Scene: The MC uses raw instincts and a sudden burst of speed from Lilith's system to drop all three thugs with brutal, clumsy strikes. It's not graceful but it works.]
They ran, swearing.
The girl looked at me with wide, wet eyes. "You… you saved me."
Her hands clung to my arm. She was trembling. Up close, she was even prettier delicate features, but a faint spark of strength in her gaze.
[System Alert]
Potential Partner Detected.
Optional Action: Initiate Euphoria Drain.
Note: Physical contact required.
Lilith's voice purred in my mind. Take her energy, mortal. Taste your first power.
[R18 Scene here — MC helps calm the girl using intimate contact, triggering his first Euphoria Drain and leaving her flushed and breathless.]
[Euphoria Drain Successful]
Core Energy: 10/100
Skill Unlocked: [Sensory Burst] — Temporarily heighten partner's pleasure sensitivity.
The girl blinked up at me. "W-What just happened…? I feel… strange."
I didn't know what to say. "It's… complicated."
A cold voice cut in from the alley mouth.
"Hand over the girl."
A cloaked figure stood there, masked, a curved blade at his side. His presence made the air heavy.
[Main Quest Updated: Survive the Night]
Reward: +30 Core Energy, +1 Rank.
Failure: Permanent Death.
Lilith's voice was almost a whisper in my ear. Now, little mortal… let's see if you're worth the body I gave you.
The cloaked figure's presence was like a cold wind through the alley.
Not just threatening — predatory.
He didn't move fast, but every step felt deliberate, like he already knew how this would end.
The girl clung tighter to my arm. Her breathing was quick, panicked. "It's him… the one who's been following me."
Great. So this wasn't just some random creep.
I glanced at the System screen hovering faintly at the edge of my vision.
[Main Quest: Survive the Night]
Reward: +30 Core Energy, +1 Rank
Failure: Permanent Death
Permanent death. So if I die here, that's it — not even Lilith's lap for a second chance.
The man stopped about ten feet away. "Last warning. Step aside. The girl comes with me."
I swallowed, my mind racing. I had no weapon, no training, no clothes. But I did have…
"System," I muttered under my breath, "show me what I've got."
[Skills Available]
Euphoria Drain (Active)
Sensory Burst (Active)
Lust Domination (Locked)
Not exactly a fighter's toolkit. But maybe…
The man's hand rested casually on his blade. "Well?"
The girl's grip trembled. Her fear was so raw I could feel it bleeding into me. Something in my chest flared — not just protective instinct, but that strange hunger Lilith had planted.
"No deal," I said, stepping forward.
The man's mask tilted slightly. "Wrong answer."
He moved.
One second he was standing there, the next he was a blur. My body screamed at me to move and, somehow, I did — stumbling back just in time for his blade to slice the air where my neck had been.
"Fast…" I hissed, heart hammering.
The man came at me again. I dodged left, then right, but each step was pure panic. I wasn't fighting I was just surviving.
Lilith's voice slid into my mind like warm smoke. You're too slow, mortal. Do you want to live?
"Yes!"
Then use what I gave you. The girl. Now.
I didn't have time to argue. I turned, grabbed the girl's face with both hands, and kissed her. Hard.
She gasped, stiffening, but the System pinged instantly.
[Euphoria Drain Initiated]
+3 Core Energy
Temporary Buff: [Burst of Life] — Increase agility and reflexes for 30 seconds.
The world slowed. The man's next strike came in, and I saw it like it was moving through water. I ducked, twisted, and slammed my elbow into his ribs.
He staggered. I didn't stop drove my knee up into his gut, then grabbed his wrist and bit it.
He snarled and stumbled back, dropping his blade.
The girl was staring at me like I'd grown horns. I didn't have time to explain. I snatched the curved sword and held it clumsily.
The man straightened, breathing hard. "You're… not normal."
"No kidding." I lunged.
The fight turned messy he was stronger and more skilled, but I was faster for now. We traded blows in the cramped alley, his cloak whipping around like shadows.
Then my buff timer ended.
Everything snapped back to normal speed, and I almost tripped. He saw the opening and swung for my head.
Dodge, mortal, Lilith hissed.
I dropped low, the blade whistling just above me, and without thinking, I drove my own stolen sword up into his chest.
The sound was sickening steel through flesh. His body went limp, collapsing against me.
[Kill Confirmed]
Core Energy +15
Total: 28/100
Skill Unlock: [Lust Domination Lv. 1] — Inflict temporary control over target's body during intimacy.
I stood there, breathing hard, the blood warm on my hands.
The girl's voice was barely a whisper. "You… you killed him…"
I looked at her. Her face was pale, eyes wide but instead of running, she stepped closer.
"You… saved me again," she said, almost like she couldn't believe it.
Her hand touched my chest. I felt the System hum in response, that same hunger flaring again.
[Optional Action Available: Euphoria Drain]
Lilith's voice purred. She's already halfway yours. Take her… and you'll be strong enough to survive what comes next.
Before I could answer, I heard movement at the mouth of the alley boots on wet stone. Shadows flickered in the lamplight.
More people were coming.
The girl's eyes darted past me. "We have to go. Now."
I hesitated, looking down at the dead man, then at the girl. My first kill was still fresh in my hands. My stomach churned but the System was already whispering rewards in my ear.
"Fine," I said, grabbing her hand. "Lead the way."
We ran.
We didn't stop until we were deep in the maze of streets. The rain had stopped, but the air still felt heavy, like the city itself was holding its breath.
The girl finally slowed, pressing a hand to her chest. "You're… insane. But… thank you."
I tried to grin, but my mind was still spinning. "You never told me your name."
She hesitated. "Aria."
"Aria… I'm—"
Before I could finish, the System interrupted.
[Main Quest Complete: Survive the Night]
+30 Core Energy
Level Up: Rank — Qi Initiate
Skill Upgrade: [Euphoria Drain Lv. 2] — More energy gained from higher-level partners.
A rush of heat exploded through me. My muscles tightened, my senses sharpened it felt like being high and drunk at the same time, but cleaner. Stronger.
Lilith's voice slid into my ear. Well done, my little mortal. You've tasted blood and lust in the same night… and survived. But the city won't stay quiet for long. Soon, every sect, gang, and demon will smell you.
I shivered. Not from fear from excitement.