S-Rank Monster no "Behemoth" dakedo, Neko to Machigawarete Elf Musume no Pet toshite Kurashitemasu

While fulfilling his sworn duty to defend humanity, a young knight meets a tragic end in a battle against demons. In a twist of fate, however, he finds himself in the lowest parts of a dungeon, ironically reincarnated as a Behemoth, an S-class monster of unparalleled strength and one of the very creatures he had once sworn to protect humans from.

Beginning as a juvenile, he deceptively resembles an ordinary orange cat. Despite his seemingly overpowered ability to absorb the skills of any creature he devours, his escape from the dungeon leaves him gravely wounded. Just in time, Aria, a D-rank adventurer, stumbles upon him, decides to nurse him back to health, and ultimately takes him in as her pet, naming him Tama.

Acknowledging Aria as his master and with his knight's honor from his past life on the line, Tama vows to defend her from danger at all costs—even if it means squandering this second chance at life.

[Written by MAL Rewrite]

Aria Main

Yano, Hinaki Japanese

Tama Main

Hatanaka, Tasuku Japanese

Vulcan Main

Kusunoki, Tomori Japanese

Stella Supporting

Ueda, Hitomi Japanese

Feri Supporting

Wakui, Yuu Japanese

Vasaago Supporting

Koyasu, Takehito Japanese

Gappoli Supporting

Nishigaki, Shunsaku Japanese

Eliza Supporting

Hara, Miyuki Japanese

Elvun Supporting

Tezuka, Hiromichi Japanese

Gladstone Supporting

Takahashi, Shinya Japanese

Oowada, Tomoyuki Producer

Oonuki, Yuusuke Producer

Sakikawa, Sachiya Producer, Planning

Meguro, Daiju Producer

Reviews

May 8, 2025

MissLitago

Recommended

So, Beheneko is definitely an ecchi show—let’s not pretend it’s not. There’s no shortage of fanservice, and the anime knows exactly what it is. But honestly? There’s a lot more going on here than just boobs and jiggle physics.

At its core, this is a fantasy-adventure series with a fun, chaotic energy, and once you get past the wild premise (yes, the elf-girl wants to f*** the S-ranked monster cat), you’ll find a really entertaining story underneath.

The fights are solid, the characters have personality, and the pacing keeps things moving. The world-building is a bit vague at times—you’re not getting deep lore dumps or intricate ... political systems—but there’s just enough detail to keep you intrigued. I kept wanting to know more about the past war and this mysterious 'Grand Mage'.

I genuinely don’t get why this show is ranked so low. Sure, it leans into the ecchi angle hard, but it also delivers a good time from start to finish. It’s dumb fun, but it’s good dumb fun. If you’re into fantasy anime with some fun adventures, chaotic fantasy worlds and a generous serving of ecchi, this one’s a blast to watch.

Reviewer’s Rating: 8

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Apr 15, 2025

KimuraTheHatoru

Mixed Feelings

Just so i make it all that much clear, this high score is meant for the material used,not for the studio and the animation.

I am this lenient because ecchi anime seem to be an incredible rarity at this point, actually good and uncensored even more so.That being said the fanservice in this anime is light, way lighter then what you are lead to believe at the very least. And it all happens in the bath really, you don't get any "accidents" with the monsters in the dungeon.Already that settles a certain level of seriousness ,and the fact that there is a time for everything. Honestly ... the only part of the story that's relatively fresh is the reincarnation as a monster,while that's not good news, the characters presented, at least the main cast as you'd call it, do have their own roles,and aren't complete cardboard cutouts. So all in all, the story is a decent one all facts considered. The naming convention is pretty basic , and so are most abilities i guess... But i honestly can't be certain if it's really the material when it comes to how the abilities look or the animation.

Now ,the elephant in the room,and something i'd otherwise given at best a 3 . The animation. Simply put, horrendous. I honestly doubt they didn't have the budget for at least 1 decent fight in the entire show. Unless they had a gum and 5 bucks as their budget,wich i somehow doubt. Or maybe it's the fact it might simply be a promotional series to bring attention to the manga. But im quite certain it's also low effort,regardless of budget. It feels that way really. Same frames used multiple times, even the one in the ending is a frame they used previously. I honestly don't understand why'd you pick up a story no matter how basic and how much slop it throws your way and present it with this half-baked low-effort animation,at that point just don't do it. Im quite certain the scores would rise all around the board for most anime like these if they'd at least have a semi-decent animation. And the CGI... Jesus Christ it's the first time i've seen some that nasty. It's like they settled on the raw generated model and gave it 0 polish. And after this assault on the eyes(because the voice actors in anime honestly have never been subpar,and that really annoys me even more about the animation),who's eager to continue the story....

And since i got beef at this point with the people who animated this ,so i paid good atention to it,i've also noticed that the nipples and the areolas are literally copy-pasted on all the girls.So even the light ecchi they show is low-effort. It's crazy how much they didn't care.

And the comparisons to My Life as Inukai-san's Dog while valid, this show isn't really as morbid because of the setting. Since it's a fantasy world,Stella and Vulcan aren't that out of line . There's no excuse for Aria though.She's a deviant through and through.

If you are intrested in the premise though, you have a better chance enjoying the manga then this thing.

Reviewer’s Rating: 7

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Mar 16, 2025

_Voyager

Not Recommended

Funny

Welcome to the nth entry in the 2020s isekai/fantasy deluge of utterly forgettable slop that has continued to plague the airwaves (or should I say bandwidths) of anime for what has felt like time immemorial. The twist this time is that the main character was a fallen hero who has reincarnated as a cat. But not just any cat - he's an S-rank behemoth, capable of astounding skills and abilities that can beat pretty much any threat or enemy he comes across, which takes away any cinematic tension (I shudder at even applying that phrase in this context) that builds up during the course of ... the show. This makes him, well, just like any other invincible isekai protagonist, except that his hair (or fur) is brown, rather than black like his brethren of clone brothers from the countless other isekai universes. The supposed "twist" here unfortunately doesn't add much to the story, failing to help it stand out from the surrounding cesspool of crap. There were many interesting ways the story could've gone to dive into the challenges and advantages of being a cat in a fantasy world (like how the video game Stray did it within a cyberpunk world).

Perhaps this story never set out to achieve anything of note - and it was cheap, fun entertainment with attractive female characters playing up ecchi tropes. Wholeheartedly embracing the degeneracy could've been a somewhat refreshing take on the genre. In that case, it could have gone further with the fanservice and spent more time and effort on that, rather than shoehorning in some contrived overarching conflict with an unnecessary level of seriousness. It could've done better to have picked a lane and stuck to it.

In terms of production, the theme songs were somewhat unique compared to similar offerings in the genre, and the voice acting performances were solid. The animation was nothing to shout about.

It would've been a complete waste of time, but at least the show had plenty of bath scenes (I think they had one in pretty much every episode). 1 point for the boobs of the main elf girl, 1 point for the boobs of the cat girl, 1 point for the boobs of the dragon girl.

Reviewer’s Rating: 3

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	Poll: S-Rank Monster no "Behemoth" dakedo, Neko to Machigawarete Elf Musume no Pet toshite Kurashitemasu Episode 12 Discussion ( 1 2 ) Stark700 - Mar 15, 2025	58 replies	by NoxLeNuit »» Jan 25, 4:39 PM
	Poll: S-Rank Monster no "Behemoth" dakedo, Neko to Machigawarete Elf Musume no Pet toshite Kurashitemasu Episode 11 Discussion Stark700 - Mar 8, 2025	24 replies	by NoxLeNuit »» Jan 24, 9:37 AM
	Poll: S-Rank Monster no "Behemoth" dakedo, Neko to Machigawarete Elf Musume no Pet toshite Kurashitemasu Episode 10 Discussion Stark700 - Mar 1, 2025	35 replies	by NoxLeNuit »» Jan 19, 9:13 AM
	Poll: S-Rank Monster no "Behemoth" dakedo, Neko to Machigawarete Elf Musume no Pet toshite Kurashitemasu Episode 7 Discussion Stark700 - Feb 8, 2025	33 replies	by Epicness215 »» Jan 17, 3:46 AM
	Poll: S-Rank Monster no "Behemoth" dakedo, Neko to Machigawarete Elf Musume no Pet toshite Kurashitemasu Episode 9 Discussion Stark700 - Feb 22, 2025	39 replies	by NoxLeNuit »» Jan 12, 5:04 PM