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Inside the Cave of Obscenity
Type
Genre
Tags[ ]
One entry per line
Rating(4.4 / 5.0, 252 votes)
5    74% (186 votes)
4    10% (24 votes)
3    5% (12 votes)
2    3% (8 votes)
1    9% (22 votes)
Language
Author(s)
One entry per line
Artist(s)
One entry per line
Year
Example: 2012
2015
Status in COO
Status in Country of Origin. One entry per line
5 Volumes
Licensed
No
Completely Translated
No
Original Publisher
One entry per line
English Publisher
One entry per line
N/A
Release Frequency
Every 23.5 Day(s)
Activity Stats
[Graph]
Weekly Rank: #668
Monthly Rank: #847
All Time Rank: #419
Reading List
[Graph]
On 6425 Reading Lists
Monthly Rank: #883
All Time Rank: #212

Description

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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 in peace.

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]…

Associated Names
One entry per line
ICO
Inbi na Doukutsu no Sono Oku de
淫靡な洞窟のその奥で
Related Series
N/A
Recommendations
Happy Peach (3)
Bishoujo wo Jouzu ni Nikubenki ni Suru Houhou (2)
Ero Gacha (1)
Adventurer Lindy’s Calamity (1)
Maou no Hajimekata (1)
X-ray Is More Than I Thought (1)

Latest Release

Date Group Release
03/17/18 Ziru’s Musings v3c1 part4
02/26/18 Ziru’s Musings v3c1 part3
02/02/18 Ziru’s Musings v3c1 part2
10/02/17 Ziru’s Musings v3c1 part1
09/10/17 Ziru’s Musings v3 prologue
09/10/17 Ziru’s Musings v2c7 part5
09/03/17 Ziru’s Musings v2c7 part4
08/02/17 Ziru’s Musings v2c7 part3
07/01/17 Ziru’s Musings v2c7 part2
06/24/17 Ziru’s Musings v2c7 part1
06/20/17 Ziru’s Musings v2c6 part6
06/20/17 Ziru’s Musings v2c6 part5
06/11/17 Ziru’s Musings v2c6 part4
06/04/17 Ziru’s Musings v2c6 part3
06/01/17 Ziru’s Musings v2c6 part2
123
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9 Reviews sorted by


Ziru Asteri
Ziru Asteri rated it
August 22, 2016
Status: v3
Before reading this series, I believe that it is important to realize that it heavily includes the following elements: rape, tentacles, mind break. These are not for the faint of heart, and if you are someone that does not like those themes, this series will absolutely not suit your interests. I implore you, please do not go into this expecting something that this novel is not. It will only serve to sour your mood!

That said---

If you are fine with those themes, however, you'll find the flow of the writing and... more>> character progression---as well as their sweet, sweet degeneration---to be better than most other translated ero novels in our community.

Written in a mix between third-person view and first-person character thoughts, this series centers around a monster that should not exist---the [Black Ooze]. In a world that has firmly settled into its post-demon king era, no one suspects that something like a monster could exist in such an out-of-the-way abandoned mine. If you are intrigued for what happens after that, I wholly recommend giving this series a shot.

Also, if you love breasts, you'll love this.

Spoiler

Our main character, the black ooze, doesn't particularly act as one---at least, in this first novel---so much as a plot device of honeybadger proportions. From what we see in this first volume, its intelligence is improving over time as it absorbs more and more of its prey. We didn't get to peer too much into its head this time, but perhaps we will in the volumes to come?

[collapse]
<<less
72 Likes · Like Permalink | Report
Overlord
Overlord
October 3, 2016
Status: v2c1
If you like novels with happy end (-ings), this will be your source of juicy joy. 69/5 stars - it's one of the better ero novels out there, naturally, only in comparance to the genre in general and if you're fan of cock magic.

Believe it or not, but we have some actual story going on here, with monster (character) development and plausible monster ecology story-telling.
19 Likes · Like Permalink | Report
kenneth223
kenneth223 rated it
August 23, 2016
Status: v1c2
Trust me, not for the good of the heart. You will feel weird inside and even your PP will feel weird when you're reading it... must fap more!
Spoiler

An Intellectual slime; Tentacle rape with possible impregnation. Basically, just tentacle rape play.

[collapse]

PS. You will definitely 'fall'.
17 Likes · Like Permalink | Report
0000000
0000000 rated it
February 5, 2017
Status: v2c2 part6
Giving it a full 5* to show just how messed up I am lol. Jokes aside, there are actually character developments and stuff, weird because we are having such developments at this early stage, most novels at this stage are either donkan MCs stupidity, kill kill kill, slice of never changing life, etc etc. Also, giving it a 5* for loving how the MC likes to screw with the victims, male and female. For female, it's rape until they mind break, which seems plausible yet I am doubtful... For male,... more>> it is killing them slowly while making them watch the female gets raped, makes it more messed up as the female, who is being raped, is watching the male slowly dying. Like 2 perspectives, male -> female: look how nice of me to let you have a grand view before dying. female -> male: look how nice of me to let you live while the other guy is dying painfully.

Really hope that there is actually an artist out there working on this piece here. <<less
13 Likes · Like Permalink | Report
LeeEzekiel
LeeEzekiel
September 9, 2016
Status: v1c2
This other reviewer... nothing about the name, description, or tags is misleading, and he wants to be outraged and rate it 1 Star when the story is exactly as presented. Seems more like he's in denial about his own tastes. Also lol, "garage".

Anyway, this is some fairly hardcore smut, but it feels like the author is setting it up to be a genuine horror story too. Like a catastrophe that descends upon the kingdom and results in widespread despair. In other words, closer to a Lovecraft monstrosity than a typical... more>> ecchi anime. It doesn't shy away from gore either, the story is perfectly willing to describe creatures (and people) being killed, smothered, torn apart, or consumed.

With only two chapters so far, it's hard to say, but the writing and translation quality are fairly top notch for now. We'll see how it goes. <<less
9 Likes · Like Permalink | Report
San-Kyu
San-Kyu rated it
March 26, 2017
Status: v2c3 part2
The premise is interesting enough to warrant reading just for it. You have a protagonist that isn't human and it isn't just about their race or body. Its a slime that thinks in a very logical and curious manner, with absolutely little in the way of morals that other R-18 protagonists usually exhibits. Even the rapist protagonists aren't driven like the slime here, pretty much all it does is for sustenance, learning, growth, rather than for its own pleasure.

The fact that it dabbles in more deviant themes such as... more>> tentacles, slime, drugs, and mind break is something to consider. The whole thing is written a bit like a horror story with the protag as the monster/villain. Updates are very slow however so be warned that the novel continues for quite a bit but the translator isn't focusing on this so that kinda sucks. <<less
7 Likes · Like Permalink | Report
fearthedeep
fearthedeep rated it
September 17, 2017
Status: v2c5
Truly a masterpiece, I love "constant orgasms" and "forced orgasms" work and this is truly a tier above in those categories.

(ಠ ͜つಠ)

If you're looking to fap and also be intreguied by some plot, this is for you.

It's basically porn with a good plot! XD

tenouttaten
5 Likes · Like Permalink | Report
mmem
mmem rated it
August 23, 2016
Status: v1c2
Too soon to tell but I like the writing. Wish the author was kinder when describing women.

Seems like there could be an interesting plot but the story may end up just being about girls being raped and mind broke by a slime. Currently looking forward to more chapters.
5 Likes · Like Permalink | Report
JokerXY
JokerXY rated it
March 18, 2018
Status: --
Prety good read, it balances the gap material with the plot pretty well. Honestly though I can only see this going one of three ways: either the slime grows intelligence and stops mindlessly reproducing let’s be real not happening anytime soon. Or it kills and rapes everything and destroys the world, or lastly the nations rise up and kill the slime whil becoming more vigilant to new threats being born
1 Likes · Like Permalink | Report
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