Behemoth’s Pet


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The elf girl, Aria is an adventurer. Her enchanting, lovely features attracts everyone. Her twin peaks are ripened to the point of exploding. Then, being embraced in between those twin peaks was a little animal… his name is Tama.

He looks like to be a cat at first glance, but Aria and her surrounding companions failed to take notice of single detail. Tama, he’s a human who’d reincarnated, given a second chance at life. His true form, it’s not that of an ordinary cat. Instead, he’s a monster of the strongest class, an extremely young behemoth.

Associated Names
One entry per line
I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet
S-Rank Monster no Behemoth Dakedo, Neko to Machigawarete Erufu Musume no Kishi (Pet) Toshite Kurashitemasu
Related Series
Reincarnated as a Dragon’s Egg ~Lets Aim to Be the Strongest~ (1)
The Spearmaster and the Black Cat (1)
Woof Woof Story ~I Said I Wanted To Be A Rich Person’s Dog, Not A Fenrir!~ (1)
History’s Strongest Husband (1)
Recommendation Lists
  1. Beasts/Pets/Monsters (NO Harems!)
  2. Covid-19 Reading
  3. Transmigrated into a pet??
  4. Novels that Features Cats
  5. Average Isekai Jap Novels

Latest Release

Date Group Release
05/20/20 wordexcerpt c83
05/13/20 wordexcerpt c82
05/07/20 wordexcerpt c81
04/23/20 wordexcerpt c80
04/16/20 wordexcerpt c79
04/09/20 wordexcerpt c78 part2
04/01/20 wordexcerpt c78 part1
03/25/20 wordexcerpt c77
03/18/20 wordexcerpt c76
03/11/20 wordexcerpt c75
03/04/20 wordexcerpt c74
02/06/20 wordexcerpt c72 part3
01/29/20 wordexcerpt c72 part2
01/23/20 wordexcerpt c72 part1
01/17/20 wordexcerpt c71 part2
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9 Reviews sorted by

New Kradmax rated it
May 27, 2020
Status: c75
I really liked this novel. I'm looking forward to the time when Tama evolves permanently into an adult. I've read that there is a novel that is previous to this one and they even mention some characters in this novel, I wonder how is it called?
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New CaptainButtshark rated it
May 20, 2020
Status: c20
Like the people above mentioned, 90% of the novel is MC talking about the heroine's tits. I don't think it's impressed enough though, which led to me making the mistake of reading it in the first place. Here's a couple excerpts

... more>>

Alone in the dressing room, Aria shamelessly and erotically undressed, followed by a deep scrub of her entire body to clean up. Of course, Tama took in every inch. A captivating figure that just begged to be touched, and not a single blemish or mark on her supple skin... but there was something that grabbed his attention more than anything else.

Two somethings.

It was those little devils on Aria’s chest, floating on the water’s surface. Drifting and swimming in the water, Tama couldn’t help but sneak peeks at them whenever he could



He had gone from enveloped in blankets to enveloped in breasts.

The... They’re huge! What even are these?! Appl—no, grapefru—no, melons!

Yes, this elf’s twin peaks were not hills, but mountains.

Even at a glance he could tell those sweater puppies couldn’t be kenneled in a cup size. That would have been like trying to store a desert in a litterbox. Still, if he had to think about it in terms of cups, they were... World Cup boobs!



It was a valley—no, a crevasse. With the exception of his head, Tama’s entire body was comfortably snug between Aria’s breasts. He could do nothing but shiver, eventually calming down and surrendering to his cozy cage, and overwhelmed by the sight themselves the street vendors gulped loudly without another word.


I get it, the novel isn't suposed to be taken seriously. But this isn't comedy, it's just some virgin's wild fetish about massive tits, elves and bestiality (Did I forget to mention she wants to f*ck the cat?) penned down.

For the love of God, spare yourself the pain and leave this novel alone <<less
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Farewell Demon
Farewell Demon rated it
July 11, 2018
Status: c6
The start is good. A guy reincarnated as a cat (behemoth), and he cat get skills by eating monster (like rou from re:monster). But when you get to chapter 20+ it's become worse. The cat try to hide his power, by sacrificing the potential he has.

It's really rare for me to rate a Japanese novel this low, but I think the author really f*cked up
23 Likes · Like Permalink | Report
Scarletmenace rated it
October 23, 2018
Status: c19
At first it grabbed my attention that the MC was reincarnated as a monster that had to work his way up the ladder. Unfortunately, the story immediately fell when he introduced the big tittied Keebler elf, reducing the onward chapters into a man writing a 15 page essay on the wonders of tit flesh.

Like seriosuly.... this guy won’t shut up about tits.

Seriously, this is just one of those novels that lures you in with an awesome summary, when in reality it’s just a ero LN about a guy who gets... more>> away with ecchi stuff thanks to his cute kitten body. <<less
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admira rated it
February 6, 2019
Status: c33
TL;DR: You'll probably like it or hate it.

Expect vulgarity and not-so-subtle female objectification from ch 9 onward. It is tagged as ecchi, but this is absurd. The female lead's breasts are the main point of any interaction involving her. That aside, the plot is pretty bland with a lot of viewpoint switching. I only skimmed ch15-33, but it was more ecchi with bland plot.

The long version: 3 stars for the boring plot, -1 for the vulgarity = 2/5 stars.

This is a pretty vulgar novel, to the point where I found... more>> it off-putting. I'm fine with mature themes (cursing, violence, sex, etc.) but the male mob characters are extremely vocal about "voicing their impressions" such as admiring "those tits" (11) or "look at those things jiggle!" (c13).

Somewhat more expected (it is ecchi), every interaction the MC (infant behemoth/kitten) has with the female lead either revolves around or mentions her breasts. This escalates further.

That aside, the plot is pretty bland. There's the expected powering up and convenient explanations for the MC's odd behavior and characteristics. There are the usual cliched situations, like the sleezy nobleman adventurer and elf ears being an erogenous zone. The viewpoint is inconsistent--1st person and 3rd person limited, and the focus switches a lot when it's 3rd person. <<less
12 Likes · Like Permalink | Report
GoldSweeper rated it
June 27, 2018
Status: v1c4
Everything seems good so far. Expecting abit more world building soon. Nothing too glaring in either the narrative or the translation. Might turn out as a good read.

As long as it doesnt turn out too monotonous it should be good
6 Likes · Like Permalink | Report
Aho555 rated it
September 12, 2019
Status: c53
What the hell. I expected some heartwarming kitty cuteness with a pinch of ecchi but the actual novel only gives me half of that. The other half is made up of boob obsession plus something I'm not entirely comfortable with, even if this novel doesn't take itself seriously.

This is still better than those bad self-insert "cheat"/"slow-life" novels though.
4 Likes · Like Permalink | Report
November 21, 2018
Status: c23
Interesting story with a twist I didn't see coming. Also at one point the MC tries to hide his abilities but shortly after finds out he can get away with using them so it avoids that pigeonhole. The only problem is that the chapters are kinda short but that's pretty common with light/web novels.
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Custardmouse rated it
May 17, 2019
Status: c45 part2
Pervy greatness! No payoff R-18 scene so far, which is a little odd given the author's tendency to play up to just about any kinky fantasy genre weirdness out there, but the story is fun enough to keep you reading. The MC's knightly virtue and romantic drama beneath the comic perviness keep an otherwise bland dungeon story on track. The translation doesn't deliver artistic prose but it avoids grammer distractions and shows a little color during the racy parts, which shows the translator knows where the most detailed work needs... more>> to go. <<less
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