Inside the Cave of Obscenity (18+)

Alternative Name: 淫靡な洞窟のその奥で
Author: Ume Tane / ウメ種
Artist: Afu Kuro / アフ黒
Category: Japanese Light Novel, Fantasy, Smut
Status: 3 Volumes
Source: –
Translator(s)/Translation Group: Ziru’s Musings
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A world where the [Demon King] was defeated by a [Hero] that came from another world. People carelessly forgot about their fear of the [Demon King] and of monsters, living peacefully.

In a forgotten and run-down cave in the mountains, a new monster that should not have been born was given birth.

The monster’s name was the [Black Ooze]. It was nothing exceptional other than its black color, an ordinary slime.

However, this slime had the special characteristic of being able to take the abilities of the living things it swallowed. It preyed on an insect that had paralytic poison, as well as other animals. Following that, it attacked a human, obtaining his knowledge and [Desire].

Before long, the monster established its target as the female mage that came to explore the cave.

This world still wasn’t aware.

[A Monster Was Born]…
Light Novel Volume 1 Cover

Warning: Depictions of Rape

If you enjoy this translation, consider buying an original copy of the series in its native tongue to support the author.

Ebooks: Volume 1Volume 2Volume 3


Volume One
Chapter 1 – The Day It Was Born
Chapter 2 – Adventurers







Volume Two
Chapter 1 – Fresh Prey
Part 1
Part 2
Part 3

Chapter 2 – The Abandoned Mine’s Investigation
Chapter 3 – The Adventurers Who Fell
Chapter 4 – The Knight Order’s Dispatch
Chapter 5 – The Female Knights’ Dignity
Chapter 6 – A Muddy Stream of Pleasure
Chapter 7 – The Female Knights’ Fate


Volume Three
Prologue – Escape
Chapter 1 – Crucible of Pleasure
Chapter 2 – In the Royal Castle
Chapter 3 – Creeping Unnoticed

7 Responses to Inside the Cave of Obscenity (18+)

  1. LeTouriste says:

    Pretty good,i can’t wait for more:)

  2. ravencraven says:


  3. ravencraven says:

    r u guys going to any updates on this series or the updates just going to be done ziru’s musings?

  4. darkmist says:

    Love this 😁
    Please update as much as you can 🙏

  5. . says:

    There should be a donation page for this to prompt the translator to translate faster!

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