
Sage_Ryuuzen
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Novels by Sage_Ryuuzen

Mosquito System: Blood Required
Ten years of being foolishly in love! That’s what it cost Zilu to realize the woman he loved was a predator—and he was just the prey.
Left heart broken and bleeding on a rooftop, Zilu watched his fiancée, Xena, laugh in the arms of his rival Arsh while they stripped him. He was supposed to die there, but the universe had a darker plan, and it came with a high-pitched buzz and a hunger that wouldn't quit.
[Welcome, Host. The Swarm awaits.]
Saved by a mysterious System, Zilu is given a second chance at life with a twisted catch.
To survive, he must become the King of the Aedes realm. He’s no longer a man; he’s a shadow, a silent fever, a tiny executioner capable of slipping through any crack and delivering a lethal, custom-strain of Dengue to those who ruined him.
But the System isn't just helping him settle a score.
It’s hungry. It demands a Blood Tax from every human he touches, and as Zilu harvests for the system, he begins to realize the terrifying truth. The mosquito form is just the beginning.
Every drop of blood he feeds the System is a key, slowly unlocking the gates to a long-forgotten Vampire Realm.
Zilu started this journey wanting revenge, but the deeper he sinks into the System’s hidden agenda, the more he realizes he isn't just hunting his ex-fiancée anymore...he’s becoming the progenitor of a nightmare that will swallow the world whole.
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Chapter: A Promise to the Dead
I pressed my back against the damp plaster, clutching the two-foot chef's knife. My human heart was a frantic bird trapped in a cage of ribs, hammering out a rhythm of pure terror."If you die here, your existence will be erased in all timelines."The System's words looped in my mind like a funeral dirge. I've faced a twenty-seven-story drop. I've lived as a parasite in the dirt. But this? A world where the dead refuse to stay down? This was a different kind of nightmare. I was a man who used to close his eyes during horror movies, and now, I was the lead actor in one. Should I say holy zombie!"Better than dying in Xena's hands," I whispered, a hysterical laugh bubbling up in my throat. "At least these monsters don't pretend to love you before they bite off your flesh."Snap out of it, Zilu, I scolded myself. I had twenty-four hours to survive. Energy was my most precious currency. I needed to find a hole, crawl into it, and wait for the clock to run out. I began to move, d
Last Updated: 2026-04-13
Chapter: The Red Zone Hunt
"Yes, of course. Show me," I muttered, my wings twitching with a mix of dread and desperation. I had paid the tax in blood and years of my life. I wanted the prize.[Look at your shadow, Host. Enjoy.]The red glow from the ritual hadn't fully faded when I looked down at the surface of the rainwater puddle. My heart...or the frantic little pump in my chest nearly seized."Holy... what kind of monster is that?" I screamed.On the surface of the water, I was still a mosquito. But the shadow I cast on the stone beneath the water? It was the towering, jagged silhouette of a man. A man with elongated, claw-like fingers and eyes that burned like embers in the dark. It looked like a demon made of cheap ink.[That is your new form, Host. You can haunt the waking world now. Consider it a gift.]"A gift? This is a nightmare!" I buzzed, my voice spiraling into a panic. "Imagine a mosquito flying into a room, but the shadow on the wall is a six-foot-tall reaper. That's not a gift, that's
Last Updated: 2026-04-01
Chapter: The Altar of Ascension
The night air was heavy, thick with the scent of damp earth and the electric hum of an approaching storm. I was hovering aimlessly over a stagnant pond, my wings beating in a restless rhythm. To anyone else, I am just a nuisance in the dark (that's actually true though). Anyway, I was an anxious mosquito counting the seconds until midnight.In the hollow space where my stomach used to be, I felt the weight of the prize: the Crimson Tax. The blood of that monster Roy was still warm within me, a pulsing, rare energy that felt like liquid fire. It was Rh-Null. The Red Blood. The kind of rare essence that was supposed to bridge the gap between my bug life and my human soul."System," I buzzed, my tone sounded sharp and impatient. "Midnight is breathing down my neck. Where are you?"Silence.Usually, that cold, robotic voice used to snapped back before I could even finish a thought. But now? No answer came. Just the distant croak of a bullfrog and the rustle of leaves. A cold knot
Last Updated: 2026-04-01
Chapter: Blight of the Damned
The transfusion room was a sterile, white-tiled purgatory that smelled of rubbing alcohol. Nurses moved with a frantic urgency, their rubber-soled shoes chirping against the floor like panicked birds. In the center of it all stood Roy or rather, the hollowed-out shell that used to be Roy.I watched from the back of a plastic chair, my compound eyes tracking the jerky, robotic movements of his limbs. Inside that body, the real Roy was howling. I could feel the vibrations of his terror through the System's link; he was a passenger in his own skin, screaming at a wall of silence."Get out! Get out of my body, you freak!" his mind shrieked.I chuckled, the sound came out a low, dry vibration in my thorax. No one gonna noticed me... A mosquito! Hahaha..."Lay down here, Mr. Roy," a senior nurse urged, her voice tight with the stress of the ticking clock. "We need to tap the vein now. Every second we lose is a second your wife doesn't have."Roy stood stiffly, his muscles twitching
Last Updated: 2026-04-01
Chapter: A puppet
"Baby, if you don't give your blood, won't she be angry at you?"The woman's voice was like honey dripping over broken glass. She lounged on the hospital sofa, twirling a lock of hair around her finger as she looked at Roy. Her eyes were bright with the predatory gleam of someone watching an obstacle being removed.Roy let out a jagged, ugly laugh. "Angry at me,pfft? Teresha is obsessed with me. Even if she wakes up... which she won't. She'll probably thank me for not ruining my health with a needle. She's a pain, honestly. Always has been.""Baby, look at Dr. Andre," she whispered with a sharp smirk, pointing toward the door. "He's still standing there. Hoping you would donate your blood."Roy turned his gaze toward the doctor. The air in the room seemed to thicken with the stench of his arrogance."Dr. Andre, I believe you value your career, don't you?" Roy's voice was a low, vibrating threat.The doctor's face went from pale to a deep, insulted red. "What exactly are you i
Last Updated: 2026-04-01
Chapter: Blood of a Betrayer
The first rays of the morning sun didn't feel like a blessing. it felt more like they a blowtorch.I tried to yawn, but the motion was just a sickening vibration of my chitinous jaw. Last night was a fever dream. A blurred montage of shadows, the metallic tang of human life on my tongue, and the terrifying rush of playing god. I still couldn't wrap my head around it. I was a man who used to order expensive steaks and vintage wine... And now, I was a parasite lurking in the weeds.As the sun climbed higher, my skin began to sizzle. To a human, it was a pleasant morning. To me, the light was a searing radiation that threatened to cook me from the inside out. I scrambled into the damp, dark safety of a hollowed-out log, my tiny heart hammering against my ribs."What now?" I croaked into the silence blaming my bad luck.I was bored, terrified, and fueled by a singular, jagged purpose: I had to make Xena bleed. I had to see the light leave her eyes just like it almost left mine. Bu
Last Updated: 2026-04-01
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