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Sakai Kousan - Death to All Dragons

Like reading NSFW Mystery web novels? Explore our free online NSFW Mystery novels and find some of the best fiction stories you’ll ever read.
Consider yourself a NSFW Mystery novel writer? Share your talent here!

[BL] AOTD
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103

[BL] Academy of the Dead

Death row convict, 2805, died from lethal injection. He was expecting to awake to the sight of nothingness. Instead came the sound of cooing from a lady. What the hell! Transmigrated into the oh-so peaceful life, he was extremely bored. His mind always drifted to the old games he used to pl...

Kyonio
Author:
Updated: Oct 04, 2021
Chapters: 
2
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Ongoing
NSFWAdventureBoys LoveFantasyMystery
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54

AXE-MAN

Ex-salaryman turned vigilante when his life took the wrong turn...

Author:
Updated: Jul 22, 2021
Chapters: 
1
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Ongoing
NSFWActionMysterySeinenThrillerTragedy
I
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50

I

"I, I am, I was, I will, I have, I had, I... I... I...I?..." He questions himself every time. Who is "I"? Who builds this "I"? Is it you before him? Is it them around him? Is it himself? Is it just a delusion of his? All he can say is "I don't know?.." //A.N Honestly, I think most won'...

Marie Seki
Author:
Updated: Jan 14, 2020
Chapters: 
1
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Ongoing
NSFWMysteryPhilosophicalPsychologicalSlice of Life
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196
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Remote Artist

This is The story of Nathan, who dreams of someone he can't remember and lives for someone he can't forget.

Updated: Nov 26, 2016
Chapters: 
1
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Ongoing
NSFWAdventureHorrorMysteryPsychologicalRomance
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37

Traits

Takumi has died more times than he can count. in different bodies, different eras, and lives that were never meant to be his. Each rebirth leaves behind memories that aren’t his to keep, and questions that never stop chasing him. Why does he return? And who keeps dragging him back? As fragments...

Akinori. T
Author:
Updated: Nov 14, 2025
Chapters: 
2
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Ongoing
NSFWComedyCrimeMysteryPsychologicalRomance
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34
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The power begins

A fantasy style novel about the coming of power. Beware as this contains somewhat 13+ content like mentions of murder and suicide as well as lgbtq+

Updated: Nov 05, 2025
Chapters: 
3
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Ongoing
NSFWActionFantasyMagicMysteryRomance
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24

Ta Erôtika, Or, Virtue Ethics in Times of Mess and Mayhem [working title]

[Proof of concept at the moment, please give feedback if you feel inclined!] Dark academia, but make it sexy. East St. Jude, Vermont. Spring, 2018. The illustrious Hawthorne University has suffered a terrible tragedy. Elliot Hayes floats in a nihilistic fever dream, Ekene Ahmadi still has ...

Updated: Oct 15, 2025
Chapters: 
3
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Ongoing
NSFWLGBTQ+MysteryPhilosophicalPsychological
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33

Miyuki Shibata. P. I.

At KAIS, A certain student has recently been the vocal point and pride of their entire student body and campus. While at the same time, has been a slight cause of worry and shame for most of the school staff as of late. Her name is Miyuki Shibata, a beautiful redhead master detective with a hot G...

Updated: Oct 07, 2025
Chapters: 
1
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Ongoing
NSFWDramaEcchiHorrorMartial ArtsMystery
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26

Dead Sinner

Artie had finally started a relationship with his childhood friend and loved, Silica Faeryn, after loving her since he was a child. Things were going as well as he could have hoped, given that she's the princess of her elven settlement, while he's always been a side character. and in the bes...

Updated: Sep 26, 2025
Chapters: 
4
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Ongoing
NSFWComedyFantasyHorrorMysteryRomance
Glitchzero
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33

Beyond The Mask: Glitched Hero.exe

Superheroes are often seen in comics, mangas, or films. They usually represent symbols of justice, pride, and power. But in this world… heroes are real. They live among us. Some save lives from the shadows, others have become public icons. But behind the smiles, there are wounds. Behind the suits...

sky__prod
Author:
Updated: Aug 12, 2025
Chapters: 
2
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Ongoing
NSFWActionGameHorrorMysterySci-Fi