Ongoing
“Fallen knight reincarnated as S-ranked behemoth kitten vows to protect elf who adopts him.”
I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet
Sランクモンスターの《ベヒーモス》だけど、猫と間違われてエルフ娘の騎士〈ペット〉として暮らしてます
6.34
19,708 rank · 15,538 readers · 48 favorites
Seinen
Action
Adventure
Comedy
Fantasy
Ecchi
For you
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Based on your preference for character-driven stories with layered emotional arcs, this title's exploration of identity and belonging would deeply resonate. The pacing mirrors series you've rated highly, and its thematic depth aligns with your appreciation for nuanced storytelling...
However, the slow initial episodes might test your patience given your history of dropping shows that don't hook you early. The art style shift in the middle arc could also be a concern...
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Synopsis
Fallen knight reincarnated as S-ranked behemoth kitten vows to protect elf who adopts him.
A proud knight, slain in battle, finds himself alive once more-reincarnated in the body of a fearsome behemoth. As if he wasn't confused enough by this turn of events, apparently behemoth cubs look exactly like adorable kittens?! Even if the rest of the world sees him as soft and cuddly, he has the honor of a noble warrior and the strength of an unstoppable S-ranked monster, both of which will be put to the test as he fights to protect the beautiful elf who has taken him as her pet! (Source: Yen Press)
What people say
Community consensus
Derived from 4 sampled reviews
5.0
/10
What 4 readers settled on.
33%
recommend
Score distribution
median 5
mode 3
σ 1.58
Agreement
Mostly aligned
σ 1.58 · some divergence
The polarity gap
3.5 pts
Recommenders 7.0 · others 3.5
Yes
No
Score over time
↓ 2.00
Running avg · May 2019 → Aug 2025
Snap verdicts
· shortest highly-rated reviews
- 7 “Fantasy/ Cat+Elf/ Ecchi moments+Quest Minor Spoilers with some translations(personal interpretation, not backed by an expert) /ᐠ｡‸｡ᐟ\ Meow? ->What? I am reincarnated as a S class monster, but in a...”
- 3 “Generic and bizarre. Isekai where the MC is an overpowered cat monster with a harem of dumb oversexualized females that want to make sex and have child with an overpowered cat monster. Shallow,...”
- 6 “What if you isekai into a cat and you were always put between a busty elf girl's boobs? It's probably a very good compromise to being a cat. STORY: Initially it was nice for me, because the concept...”
Verbosity
Short · 75%
Medium · 25%
Long · 0%
Read Order & Related
Explore the I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet universe
Cast
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A Manga Publication
- Published Mar 2018 – ongoing
- Source Manga media type
- Ref. BS-M47861 catalog