I'm a Behemoth
{{Short description|Japanese light novel series}}
{{Infobox animanga/Header
| name = I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet
| image = I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet LN vol 1.jpg
| caption = First light novel volume cover
| ja_kanji = 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
| ja_romaji = Esuranku Monsutā no "Behīmosu" dakedo, Neko to Machigawarete Erufu Musume no Kishi Petto to Shite Kurashitemasu
| genre = {{ubl|Adventure|Fantasy comedy|Sword and sorcery}}
}}
{{Infobox animanga/Print
| type = novel series
| author = Nozomi Ginyoku
| publisher = Shōsetsuka ni Narō
| first = August 19, 2017
| last =
| volumes =
| volume_list =
}}
{{Infobox animanga/Print
| type = light novel
| author = Nozomi Ginyoku
| illustrator = Mitsuki Yano
| publisher = Micro Magazine
| publisher_en = {{English manga publisher|NA=Yen Press}}
| demographic = Male
| imprint = GC Novels
| first = March 30, 2018
| last =
| volumes = 2
| volume_list =
}}
{{Infobox animanga/Print
| type = manga
| author = Nozomi Ginyoku
| illustrator = Taro Shinonome
| publisher = Hakusensha
| publisher_en = {{English manga publisher|NA=Yen Press}}
| demographic = Seinen
| imprint =
| magazine = {{ubl|Young Animal Arashi|{{noitalic|(March 2 – June 1, 2018)}}|Young Animal|{{noitalic|(July 13, 2018 – present)}}}}
| first = March 2, 2018
| last =
| volumes = 12
| volume_list =
}}
{{Infobox animanga/Video
| type = tv series
| title = Beheneko: The Elf-Girl's Cat Is Secretly an S-Ranked Monster!
| director = Tetsuo Hirakawa
| producer =
| writer = Kanichi Katō
| music = {{ubl|Yūsuke Shirato|Oni}}
| studio = {{ubl|Zero-G|Saber Works}}
| licensee = Sentai Filmworks {{English anime licensee|SA/SEA|Muse Communication}}
| network = Tokyo MX, SUN, BS11, TVh, UX, NCC, HAB (censored)
AT-X (uncensored)
| network_en =
| first = January 4, 2025
| last = March 22, 2025
| episodes = 12
| episode_list =
}}
{{Infobox animanga/Footer|portal=yes}}
{{Nihongo foot|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|Esuranku Monsutā no "Behīmosu" dakedo, Neko to Machigawarete Erufu Musume no Kishi Petto to Shite Kurashitemasu|group=lower-alpha|lead=yes}}, also known simply as Beheneko, is a Japanese light novel series written by Nozomi Ginyoku and illustrated by Mitsuki Yano. It began serialization on the user-generated novel publishing website Shōsetsuka ni Narō in August 2017. It was later acquired by Micro Magazine, which began publishing it under its GC Novels imprint in March 2018. A manga adaptation illustrated by Taro Shinonome began serialization in Hakusensha's Young Animal Arashi magazine in March 2018 before being transferred to the Young Animal magazine in July of the same year. An anime television series adaptation produced by Zero-G and Saber Works aired from January to March 2025.
Plot
An unnamed knight, once a valiant and skilled warrior, meets a tragic end on the battlefield. His life is taken abruptly, and with it, the dreams and hopes he held for his future. However, fate has other plans. Instead of being lost to death forever, the knight is reincarnated in an unexpected and somewhat bewildering form: a baby behemoth. But this behemoth isn’t like the terrifying, colossal monsters one might expect—this particular behemoth resembles nothing more than an ordinary, albeit somewhat large, cat. He retains the memories of his past life as a knight, but now he must navigate the world as a cute, furry creature.
In this new life, he is taken in by a beautiful and kind-hearted elf girl named Aria. Aria, who is struggling with her own emotional scars, has little interest in relationships, especially with men. She has had bad experiences in the past, and as a result, she keeps her distance from them, preferring the company of animals and her close friends. Aria, unaware of Tama’s true identity as a reincarnated knight, adopts him as a pet, drawn to his curious and endearing appearance. She names him "Tama," after a traditional name for cats in her homeland.
Though he’s now a mere kitten in appearance, the knight's extraordinary abilities remain intact. He quickly forms a deep attachment to Aria, and as time passes, his affection for her blossoms into love. As a baby behemoth, Tama’s powers far exceed those of an ordinary cat—he possesses the strength, resilience, and magical abilities of a monster that would typically strike fear into any who crossed his path. His form may be small, but his powers are immense. Despite this, Tama does everything in his power to stay hidden, not wanting to reveal his true nature to Aria just yet.
However, when Aria finds herself in danger, Tama’s protective instincts kick in. Using his extraordinary powers, he defends her from harm, unintentionally revealing that he is far more than just an ordinary cat. His immense strength, elemental magic, and terrifying abilities leave everyone around him in awe, and the people in Aria's village begin to whisper about the "elemental cat" that has taken residence in her home. His abilities are attributed to him being a rare and mysterious elemental cat, a creature of legend said to possess incredible powers.
As Aria spends more time with Tama, she begins to see him in a different light. Her initial hesitations about men start to fade, and she grows to love Tama, not just for his physical form, but for the deep bond they share. She finds solace in his presence, and with every passing day, her affection for him only deepens. Tama, who has lived a life filled with battles and struggle, finds peace in his new, simple life with Aria, and he becomes utterly devoted to her, doing everything in his power to protect her from harm.
But Tama’s charm doesn’t stop with Aria. His affectionate nature and powerful abilities begin to attract the attention of other females—elves, beastmen, and even humans—who are drawn to his unique qualities. Some are captivated by his adorable cat-like appearance, while others are intrigued by the mystery surrounding him. Before long, Tama finds himself surrounded by several women, each of whom falls in love with him for different reasons. His kindness, loyalty, and hidden strength make him irresistible to them, and he becomes an object of affection for many, much to his own confusion. Despite this growing attention, Tama remains unwavering in his love for Aria, and he tries to navigate the complexities of his relationships with these other women without betraying his devotion.
Aria, while initially jealous and uncertain of Tama’s growing circle of admirers, eventually learns to trust him and accept the unique situation. She understands that Tama, though small and seemingly harmless, is no ordinary creature, and she grows to accept his feelings for her. The two of them share a deep, unspoken bond that transcends the typical boundaries of species or past lives. As Tama’s love for Aria continues to grow, he must also navigate the challenges of his new life as a reincarnated knight in the form of a cat—dealing with both the affection of other women and the burden of keeping his true identity a secret from those around him.
As the story unfolds, Tama’s adventures continue, filled with magical creatures, heartwarming moments, and the occasional confrontation. Through it all, Tama and Aria’s relationship deepens, proving that love can transcend even the most unusual circumstances. Tama must learn how to balance his past life as a knight with his new life as a behemoth cat, all while ensuring that his affection for Aria remains steadfast despite the chaos that surrounds them.
Characters
;{{Nihongo|Tama|タマ}}
:{{voiced by|Tasuku Hatanaka, Riho Sugiyama (cat)}}
;{{Nihongo|Aria|アリア}}
:{{voiced by|Hinaki Yano}}
;{{Nihongo|Vulcan|ヴァルカン|Varukan}}
:{{voiced by|Tomori Kusunoki}}
;{{Nihongo|Stella|ステラ|Sutera}}
:{{voiced by|Hitomi Ueda}}
;{{Nihongo|Lily|リリ|Riri}}
;{{Nihongo|Feri|フェリ}}
:{{voiced by|Yū Wakui}}
Media
=Light novel=
Written by Nozomi Ginyoku, I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet began serialization on the user-generated novel publishing website Shōsetsuka ni Narō on August 19, 2017.{{cite web|script-title=ja: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|url=https://ncode.syosetu.com/n9107ee/|publisher=Shōsetsuka ni Narō|access-date=March 8, 2024|lang=ja}} It was later acquired by Micro Magazine who began publishing it with illustrations by Mitsuki Yano under their GC Novels imprint on March 30, 2018. Two volumes have been released as of October 2018. During their Anime Expo 2019 panel, Yen Press announced that they licensed the light novel.{{cite web|last=Sherman|first=Jennifer|title=Yen Press Adds The Hero Is Overpowered but Overly Cautious, 13 More Manga/Novels (Updated)|url=https://www.animenewsnetwork.com/news/2019-07-04/yen-press-adds-the-hero-is-overpowered-but-overly-cautious-13-more-manga-novels/.148643|website=Anime News Network|date=July 13, 2019|access-date=March 8, 2024|archive-date=April 5, 2024|archive-url=https://web.archive.org/web/20240405100627/https://www.animenewsnetwork.com/news/2019-07-04/yen-press-adds-the-hero-is-overpowered-but-overly-cautious-13-more-manga-novels/.148643|url-status=live}}
{{Graphic novel list/header
| Language = Japanese
| SecondLanguage = North American
| Width = 70%
| LineColor = 7D657F
}}
{{Graphic novel list
| VolumeNumber = 1
| OriginalISBN = 978-4-89-637700-2
| LicensedRelDate = July 21, 2020{{cite web|last=Sherman|first=Jennifer|title=North American Anime, Manga Releases, July 19-25|url=https://www.animenewsnetwork.com/news/2020-07-23/north-american-anime-manga-releases-july-19-25/.162122|website=Anime News Network|date=July 23, 2020|access-date=March 8, 2024|archive-date=December 8, 2022|archive-url=https://web.archive.org/web/20221208003738/https://www.animenewsnetwork.com/news/2020-07-23/north-american-anime-manga-releases-july-19-25/.162122|url-status=live}}
| LicensedISBN = 978-1-97-533294-5
| ChapterListCol1 =
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{{Graphic novel list
| VolumeNumber = 2
| OriginalISBN = 978-4-89-637829-0
| LicensedRelDate = November 17, 2020{{cite web|last=Sherman|first=Jennifer|title=North American Anime, Manga Releases, November 15-21|url=https://www.animenewsnetwork.com/news/2020-11-17/north-american-anime-manga-releases-november-15-21/.166436|website=Anime News Network|date=November 17, 2020|access-date=March 8, 2024|archive-date=June 5, 2023|archive-url=https://web.archive.org/web/20230605112440/https://www.animenewsnetwork.com/news/2020-11-17/north-american-anime-manga-releases-november-15-21/.166436|url-status=live}}
| LicensedISBN = 978-1-97-530840-7
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{{Graphic novel list/footer}}
=Manga=
A manga adaptation illustrated by Taro Shinonome began serialization in Hakusensha's Young Animal Arashi magazine on March 2, 2018.{{cite web|script-title=ja:東雲太郎がなろう小説をマンガ化、子猫そっくりのベヒーモスがエルフ娘に拾われる|url=https://natalie.mu/comic/news/271890|publisher=Natasha, Inc.|website=Comic Natalie|date=March 2, 2018|access-date=March 8, 2024|lang=ja|archive-date=March 8, 2024|archive-url=https://web.archive.org/web/20240308181922/https://natalie.mu/comic/news/271890|url-status=live}} The manga was later transferred to the Young Animal magazine on July 13 the same year.{{cite web|last=Pineda|first=Rafael Antonio|title=Hakusensha's Young Animal Arashi Magazine Ends|url=https://www.animenewsnetwork.com/news/2018-05-31/hakusensha-young-animal-arashi-magazine-ends/.132252|website=Anime News Network|date=May 31, 2018|access-date=March 8, 2024|archive-date=January 25, 2022|archive-url=https://web.archive.org/web/20220125194456/https://www.animenewsnetwork.com/news/2018-05-31/hakusensha-young-animal-arashi-magazine-ends/.132252|url-status=live}} The manga's chapters have been collected into twelve tankōbon volumes as of December 2024. During their Anime Expo 2019 panel, Yen Press announced that they also licensed the manga adaptation.
{{Graphic novel list/header
| Language = Japanese
| SecondLanguage = North American
| Width = 72%
| LineColor = 933E1B
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{{Graphic novel list
| VolumeNumber = 1
| OriginalRelDate = October 29, 2018{{cite web|script-title=ja: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 1|url=https://www.hakusensha.co.jp/comicslist/52766/|publisher=Hakusensha|access-date=March 8, 2024|lang=ja|archive-date=October 29, 2023|archive-url=https://web.archive.org/web/20231029161152/https://www.hakusensha.co.jp/comicslist/52766/|url-status=live}}
| OriginalISBN = 978-4-59-216271-1
| LicensedRelDate = April 21, 2020{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 1 (manga)|url=https://yenpress.com/titles/9781975399238-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-1-manga|publisher=Yen Press|access-date=March 8, 2024|archive-date=March 8, 2024|archive-url=https://web.archive.org/web/20240308181800/https://yenpress.com/titles/9781975399238-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-1-manga|url-status=live}}
| LicensedISBN = 978-1-97-539923-8
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{{Graphic novel list
| VolumeNumber = 2
| OriginalRelDate = March 29, 2019{{cite web|script-title=ja: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 2|url=https://www.hakusensha.co.jp/comicslist/53924/|publisher=Hakusensha|access-date=March 8, 2024|lang=ja|archive-date=October 29, 2023|archive-url=https://web.archive.org/web/20231029051007/https://www.hakusensha.co.jp/comicslist/53924/|url-status=live}}
| OriginalISBN = 978-4-59-216272-8
| LicensedRelDate = July 21, 2020{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 2 (manga)|url=https://yenpress.com/titles/9781975399528-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-2-manga|publisher=Yen Press|access-date=March 8, 2024|archive-date=March 8, 2024|archive-url=https://web.archive.org/web/20240308181759/https://yenpress.com/titles/9781975399528-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-2-manga|url-status=live}}
| LicensedISBN = 978-1-97-539952-8
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{{Graphic novel list
| VolumeNumber = 3
| OriginalRelDate = October 29, 2019{{cite web|script-title=ja: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 3|url=https://www.hakusensha.co.jp/comicslist/55601/|publisher=Hakusensha|access-date=March 8, 2024|lang=ja|archive-date=October 29, 2023|archive-url=https://web.archive.org/web/20231029235759/https://www.hakusensha.co.jp/comicslist/55601/|url-status=live}}
| OriginalISBN = 978-4-59-216273-5
| LicensedRelDate = November 9, 2021{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 3 (manga)|url=https://yenpress.com/titles/9781975321314-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-3-manga|publisher=Yen Press|access-date=March 8, 2024|archive-date=March 8, 2024|archive-url=https://web.archive.org/web/20240308181759/https://yenpress.com/titles/9781975321314-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-3-manga|url-status=live}}
| LicensedISBN = 978-1-97-532131-4
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{{Graphic novel list
| VolumeNumber = 4
| OriginalRelDate = March 27, 2020{{cite web|script-title=ja: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 4|url=https://www.hakusensha.co.jp/comicslist/56765/|publisher=Hakusensha|access-date=March 8, 2024|lang=ja|archive-date=May 18, 2024|archive-url=https://web.archive.org/web/20240518104242/https://www.hakusensha.co.jp/comicslist/56765/|url-status=live}}
| OriginalISBN = 978-4-59-216274-2
| LicensedRelDate = March 22, 2022{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 4 (manga)|url=https://yenpress.com/titles/9781975323332-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-4-manga|publisher=Yen Press|access-date=March 8, 2024}}
| LicensedISBN = 978-1-97-532333-2
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{{Graphic novel list
| VolumeNumber = 5
| OriginalRelDate = November 27, 2020{{cite web|script-title=ja: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 5|url=https://www.hakusensha.co.jp/comicslist/58595/|publisher=Hakusensha|access-date=March 8, 2024|lang=ja|archive-date=May 18, 2024|archive-url=https://web.archive.org/web/20240518094810/https://www.hakusensha.co.jp/comicslist/58595/|url-status=live}}
| OriginalISBN = 978-4-59-216275-9
| LicensedRelDate = October 25, 2022{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 5 (manga)|url=https://yenpress.com/titles/9781975334550-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-5-manga|publisher=Yen Press|access-date=March 8, 2024|archive-date=November 26, 2024|archive-url=https://archive.today/20241126034036/https://yenpress.com/titles/9781975334550-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-5-manga|url-status=live}}
| LicensedISBN = 978-1-97-533455-0
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{{Graphic novel list
| VolumeNumber = 6
| OriginalRelDate = May 28, 2021{{cite web|script-title=ja: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|url=https://www.hakusensha.co.jp/comicslist/60183/|publisher=Hakusensha|access-date=March 8, 2024|lang=ja|archive-date=April 25, 2024|archive-url=https://web.archive.org/web/20240425021904/https://www.hakusensha.co.jp/comicslist/60183/|url-status=live}}
| OriginalISBN = 978-4-59-216336-7
| LicensedRelDate = April 18, 2023{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 6 (manga)|url=https://yenpress.com/titles/9781975349509-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-6-manga|publisher=Yen Press|access-date=March 8, 2024|archive-date=March 8, 2024|archive-url=https://web.archive.org/web/20240308181758/https://yenpress.com/titles/9781975349509-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-6-manga|url-status=live}}
| LicensedISBN = 978-1-97-534950-9
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{{Graphic novel list
| VolumeNumber = 7
| OriginalRelDate = February 28, 2022{{cite web|script-title=ja: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 7|url=https://www.hakusensha.co.jp/comicslist/62389/|publisher=Hakusensha|access-date=March 8, 2024|lang=ja|archive-date=April 25, 2024|archive-url=https://web.archive.org/web/20240425011545/https://www.hakusensha.co.jp/comicslist/62389/|url-status=live}}
| OriginalISBN = 978-4-59-216337-4
| LicensedRelDate = August 22, 2023{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 7 (manga)|url=https://yenpress.com/titles/9781975362317-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-7-manga|publisher=Yen Press|access-date=March 8, 2024|archive-date=November 26, 2024|archive-url=https://archive.today/20241126034100/https://yenpress.com/titles/9781975362317-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-7-manga|url-status=live}}
| LicensedISBN = 978-1-97-536231-7
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{{Graphic novel list
| VolumeNumber = 8
| OriginalRelDate = October 28, 2022{{cite web|script-title=ja: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 8|url=https://www.hakusensha.co.jp/comicslist/64519/|publisher=Hakusensha|access-date=March 8, 2024|lang=ja|archive-date=April 25, 2024|archive-url=https://web.archive.org/web/20240425021823/https://www.hakusensha.co.jp/comicslist/64519/|url-status=live}}
| OriginalISBN = 978-4-59-216338-1
| LicensedRelDate = January 23, 2024{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 8 (manga)|url=https://yenpress.com/titles/9781975373672-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-8-manga|publisher=Yen Press|access-date=March 8, 2024|archive-date=November 26, 2024|archive-url=https://archive.today/20241126034112/https://yenpress.com/titles/9781975373672-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-8-manga|url-status=live}}
| LicensedISBN = 978-1-97-537367-2
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{{Graphic novel list
| VolumeNumber = 9
| OriginalRelDate = April 28, 2023{{cite web|script-title=ja: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 9|url=https://www.hakusensha.co.jp/comicslist/66089/|publisher=Hakusensha|access-date=March 8, 2024|lang=ja|archive-date=April 25, 2024|archive-url=https://web.archive.org/web/20240425020356/https://www.hakusensha.co.jp/comicslist/66089/|url-status=live}}
| OriginalISBN = 978-4-59-216339-8
| LicensedRelDate = May 21, 2024{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 9 (manga)|url=https://yenpress.com/titles/9781975388515-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-9-manga|publisher=Yen Press|access-date=March 8, 2024|archive-date=November 26, 2024|archive-url=https://archive.today/20241126034123/https://yenpress.com/titles/9781975388515-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-9-manga|url-status=live}}
| LicensedISBN = 978-1-97-538851-5
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{{Graphic novel list
| VolumeNumber = 10
| OriginalRelDate = October 27, 2023{{cite web|script-title=ja: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 10|url=https://www.hakusensha.co.jp/comicslist/68490/|publisher=Hakusensha|access-date=March 8, 2024|lang=ja|archive-date=December 3, 2023|archive-url=https://web.archive.org/web/20231203013554/https://www.hakusensha.co.jp/comicslist/68490/|url-status=live}}
| OriginalISBN = 978-4-59-216340-4
| LicensedRelDate = October 15, 2024{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 10 (manga)|url=https://yenpress.com/titles/9781975396947-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-10-manga|publisher=Yen Press|access-date=May 1, 2024|archive-date=May 1, 2024|archive-url=https://web.archive.org/web/20240501031402/https://yenpress.com/titles/9781975396947-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-10-manga|url-status=live}}
| LicensedISBN = 978-1-97-539694-7
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{{Graphic novel list
| VolumeNumber = 11
| OriginalRelDate = March 29, 2024{{cite web|script-title=ja: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 11|url=https://www.hakusensha.co.jp/comicslist/70094/|publisher=Hakusensha|access-date=March 9, 2024|lang=ja|archive-date=April 6, 2024|archive-url=https://web.archive.org/web/20240406195229/https://www.hakusensha.co.jp/comicslist/70094/|url-status=live}}
| OriginalISBN = 978-4-59-216428-9
| LicensedRelDate = February 18, 2025{{cite web|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet, Vol. 11 (manga)|url=https://yenpress.com/titles/9798855410211-i-m-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girl-s-pet-vol-11-manga|publisher=Yen Press|access-date=August 30, 2024}}
| LicensedISBN = 979-8-85-541021-1
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{{Graphic novel list
| VolumeNumber = 12
| OriginalRelDate = December 26, 2024{{cite web|script-title=ja: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 12|url=https://www.hakusensha.co.jp/comicslist/73174/|publisher=Hakusensha|access-date=November 3, 2024|lang=ja}}
| OriginalISBN = 978-4-59-216429-6
| LicensedRelDate = —
| LicensedISBN =
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{{Graphic novel list
| VolumeNumber = 13
| OriginalRelDate = July 29, 2025{{cite web|script-title=ja: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 13|url=https://www.hakusensha.co.jp/comicslist/75343/|publisher=Hakusensha|access-date=May 24, 2025|lang=ja}}
| OriginalISBN = 978-4-59-216430-2
| LicensedRelDate = —
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{{Graphic novel list/footer}}
=Anime=
An anime television series adaptation was announced on March 18, 2024.{{cite web|last=Dempsey|first=Liam|title=I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet TV Anime Announced|url=https://www.crunchyroll.com/news/latest/2024/3/18/im-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girls-pet-anime-announced-cast|website=Crunchyroll|access-date=March 18, 2024|date=March 18, 2024|archive-date=March 18, 2024|archive-url=https://web.archive.org/web/20240318133211/https://www.crunchyroll.com/news/latest/2024/3/18/im-a-behemoth-an-s-ranked-monster-but-mistaken-for-a-cat-i-live-as-an-elf-girls-pet-anime-announced-cast|url-status=live}} It is produced by Zero-G and Saber Works, and directed by Tetsuo Hirakawa, with Kanichi Katō in charge of series scripts, Tomoyuki Abe designing the characters, and Yūsuke Shirato and Oni composing the music.{{cite web|last=Cayanan|first=Joanna|title=I'm a Behemoth Anime Reveals More Cast, Main Staff, 2025 Debut in Teaser Video|url=https://www.animenewsnetwork.com/news/2024-07-04/im-a-behemoth-anime-reveals-more-cast-main-staff-2025-debut-in-teaser-video/.212839|website=Anime News Network|date=December 11, 2024|access-date=December 11, 2024}} The series aired from January 4 to March 22, 2025, on Tokyo MX and other networks.{{cite web|last=Cayanan|first=Joanna|title=I'm a Behemoth Anime's 2nd Video Reveals More Cast, Ending Song, December 28 Net Debut|url=https://www.animenewsnetwork.com/news/2024-12-11/im-a-behemoth-anime-2nd-video-reveals-more-cast-ending-song-december-28-net-debut/.218881|website=Anime News Network|date=October 23, 2024|access-date=October 23, 2024}} The opening theme song is {{nihongo|"Saijōkyū no Kokoro"|最上級の心||Supreme Heart}} by Nonoka Ōbuchi,{{cite web|last=Cayanan|first=Joanna|title=I'm a Behemoth Anime's New Video Unveils More Cast & Staff, Opening Song, January Debut|url=https://www.animenewsnetwork.com/news/2024-10-23/im-a-behemoth-anime-new-video-unveils-more-cast-and-staff-opening-song-january-debut/.217090|website=Anime News Network|date=October 23, 2024|access-date=October 23, 2024}} while the ending theme song is {{nihongo|"Rimi"|リミー}} by Poka Poka Ion, a special music unit of voice actresses Nao Tōyama and Kiyono Yasuno. Sentai Filmworks licensed the series under the title Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster! in North America for streaming on Hidive.{{cite web|last=Mateo|first=Alex|title=HIDIVE to Stream From Bureaucrat to Villainess: Dad's Been Reincarnated!, Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster! Anime|url=https://www.animenewsnetwork.com/news/2024-11-12/hidive-to-stream-from-bureaucrat-to-villainess-dad-been-reincarnated-beheneko-the-elf-girl-cat-is-/.217776|publisher=Anime News Network|access-date=November 12, 2024|date=November 12, 2024|archive-date=November 19, 2024|archive-url=https://web.archive.org/web/20241119002311/https://www.animenewsnetwork.com/news/2024-11-12/hidive-to-stream-from-bureaucrat-to-villainess-dad-been-reincarnated-beheneko-the-elf-girl-cat-is-/.217776|url-status=live}} Muse Communication licensed the series in Asia-Pacific.{{Cite web |date=December 3, 2024 |title=DISTRIBUTION ANNOUNCEMENT! Muse has Acquired the license of:: 《Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster!》|url=https://www.youtube.com/post/UgkxdNN-b7QrZEP1rs-W3qNUbAQLFVWqQnje |access-date=December 3, 2024 |website=Muse Asia |language=en |via=YouTube}}{{Cite web |date=December 3, 2024 |title=[DISTRIBUTION ANNOUNCEMENT] [I am Behemoth of the S-Ranked Monster, but I am Mistaken as a Cat and I Live as a Pet of Elf Girl] is coming to MUSE!! 🌟 |url=https://www.youtube.com/channel/UCYYhAzgWuxPauRXdPpLAX3Q/community?lb=UgkxOsrUUHrdLFNNyihyT1JtfdkGrwNRNNSq |access-date=December 3, 2024 |website=Muse India |language=en |via=YouTube}}
== Episodes ==
{{Episode table
| background =
| overall =
| title =
| titleR = {{Cite web|url=https://behemoth-anime.com/story/01.html|title=Story -Terebi Anime「Esuranku Monsutā no "Behīmosu" dakedo, Neko to Machigawarete Erufu Musume no Kishi Petto to Shite Kurashitemasu」Koshiki Saito|language=ja|script-title=ja:STORY -TVアニメ「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として暮らしてます」公式サイト-|trans-title=Story -TV Anime "Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster!" Official Site-|website=behemoth-anime.com|access-date=January 4, 2025}}{{Cite web|url=https://www.hidive.com/season/28068|title=Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster! - HIDIVE|publisher=Hidive|access-date=December 28, 2024}}
| director = 15
| writer =
| aux2 =
| aux2T = Storyboarded by
| airdate =
| airdateR = {{efn|Episodes are released on ABEMA, HIDIVE and simulcast platforms by Muse a week before their televised airings.{{Cite web|url=https://behemoth-anime.com/onair/|title=On'ea -Terebi Anime「Esuranku Monsutā no "Behīmosu" dakedo, Neko to Machigawarete Erufu Musume no Kishi Petto to Shite Kurashitemasu」Koshiki Saito|language=ja|script-title=ja:ONAIR -TVアニメ「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として暮らしてます」公式サイト-|trans-title=On Air -TV Anime "Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster!" Official Site-|website=behemoth-anime.com|access-date=December 28, 2024}}}}
| episodes =
{{Episode list
| EpisodeNumber = 1
| Title = The Elf Girl and the Knight's Vow
| TranslitTitle = Erufu Musume to Kishi no Chikai
| NativeTitle = エルフ娘と騎士の誓い
| NativeTitleLangCode = ja
| DirectedBy = Takashi Asami
| WrittenBy = Tetsuo Hirakawa
| Aux2 = Tetsuo Hirakawa
| OriginalAirDate = {{Start date|2025|1|4}}
| ShortSummary = A knight is killed by a demon and is reincarnated in a dungeon as a baby behemoth, which looks like a cat. He kills and eats a slime, wyvern, minotaur, golem, and poison serpent and gains their abilities, and learns how to store items in a pocket dimension. A young elf girl named Aria enters the dungeon. The behemoth finds a treasure chest, but touching it teleports him to a hostile earth dragon. He escapes with heavy injuries, then Aria finds him, takes him home, and nurses him back to health. When he is healed, he discreetly follows her to the dungeon, vowing to protect her. She kills goblins, then he saves her from a goblin mage. They return to her guild where a man named Kasman sexually harasses her, prompting the behemoth to attack him. Kasman draws his sword, but the guild receptionist, Arnold Holzweilzenegger, makes him leave. Aria names the behemoth Tama and says he is her pet. They bathe and she confides that as a child, demons attacked her village until they were saved by Alisha the Sword Saint, which made her aspire to be just like Alisha. Later, Kasman got a paper from a baron to have Tama euthanized, then challenges Aria to a duel. If she wins, Tama will live, but if he wins, she must marry him. He allows her to have a partner, but only Tama volunteers. With Arnold as the judge, the duel begins and Kasman swiftly overpowers Aria, but Tama uses his powers and beats Kasman, ending with his own sword falling on his groin. Everyone mistakes Tama for an elemental cat as Aria is declared the winner and allowed to keep him.
}}
{{Episode list
| EpisodeNumber = 2
| Title = The Tiger-Eared Blacksmith and a New Skill
| TranslitTitle = Tora-mimi Kaji-shi to Aratanaru Skiru
| NativeTitle = 虎耳鍛冶士と新たなるスキル
| NativeTitleLangCode = ja
| DirectedBy = Keita Nakano
| WrittenBy = Toshiaki Satō
| Aux2 = Takashi Asami
| OriginalAirDate = {{Start date|2025|1|11}}
| ShortSummary = Tama learns Aria's ears are an erogenous zone. Aria goes to the tiger-eared blacksmith Vulcan to get armor for Tama made. Vulcan decides to go with them to the dungeon to learn why Aria's swords keep breaking. Vulcan easily kills goblins with her massive hammer and power over fire. Aria's swords break against tentacled roper monsters. Vulcan deduces that her high-speed fighting style is unsuited for swords and passes her daggers with which she kills the ropers. Tama discreetly eats one to gain its powers. While they bathe in a spring, Vulcan warns Aria that elemental cats can interbreed with other species and tend to rape others when they go into heat, but Aria gets excited and looks forward to that, freaking the others out. While fighting a minotaur, Tama saves Vulcan from falling debris, making her become attracted to him. They decide to be a team. Tama learns he has the potential to evolve to his next stage, but he refuses because he wants to stay Aria's cat. Aria and Tama save an orphan girl named Lala from bullies and take her to the church. Arnold promotes Aria from Rank D to Rank C, then tells the team that demons are attacking the nearby town of Lenard and abducting people. Aria is determined to stop them.
}}
{{Episode list
| EpisodeNumber = 3
| Title = Urgent Quest - Defeat the Demons!
| TranslitTitle = Kinkyū Kuesuto Mazoku Tōbatsu e!
| NativeTitle = 緊急クエスト 魔族討伐へ！
| NativeTitleLangCode = ja
| DirectedBy = Keita Nakano &
Kentaro Mizuno
| WrittenBy = Tetsuo Hirakawa
| Aux2 = Shin'ichi Watanabe
| OriginalAirDate = {{Start date|2025|1|18}}
| ShortSummary = Aria, Vulcan, and Tama join a party led by Cedric Ruine and composed of Danny, Howard, Keni, and Mariette, all heroes who won a previous war against the demons. Cedric and Arnold are in a relationship. The party goes to Lenard and bathes in a hot spring. Danny and Howard attempt to peep on the girls, but Tama stops them. The party goes to the demons' lair. The demons' leader, Beryl Astaroth, sends werewolves at them that are defeated. He reveals himself and explains he seeks revenge on humanity for the demons' previous defeat. Beryl uses force fields to separate the party and sends trolls with regeneration after them. Tama and Cedric defeat them with fire blasts and a life-draining sword respectively. Aria kills Beryl, but he stabs her with a poisoned dagger. The party rushes her to the town where a doctor explains the antidote requires an earth dragon eye. Tama rushes to the dungeon and fights the earth dragon from before. Realizing he cannot defeat it as he is now, he evolves to his next stage and becomes an enormous behemoth.
}}
{{Episode list
| EpisodeNumber = 4
| Title = Awaken - Behemoth!
| TranslitTitle = Kakusei! "Behīmosu"
| NativeTitle = 覚醒！《ベヒーモス》
| NativeTitleLangCode = ja
| DirectedBy = Lee Dong-ik
| WrittenBy = Tetsuo Hirakawa
| Aux2 = Shin Matsuo
| OriginalAirDate = {{Start date|2025|1|25}}
| ShortSummary = Tama mortally wounds the earth dragon, but runs out of energy and returns to cat form. He carries the dragon back to Lenard where the team extracts an eye and feeds it to Aria. As she recovers, she remembers being saved from demons by Alisha and her elemental cat. They return home and Tama goes to the dungeon alone, where he is attacked by a woman with fangs and claws, but escapes. Aria confides that she is tired of always being saved. She gets new armor from Vulcan and the three of them return to the dungeon. They meet the woman from before who has no name and wants to have sex with Tama. Aria takes pity on her and takes her in, naming her Stella. Aria and Vulcan need to teach her basic things like bathing. As Aria sleeps, Stella telepathically speaks to Tama and explains she was the earth dragon he killed, who reincarnated in a humanoid form and is now in love with him. Aria wakes up and says Tama is hers, but Stella refuses to give up.
}}
{{Episode list
| EpisodeNumber = 5
| Title = Elf Girl & Dragon Girl
| TranslitTitle = Erufu Musume to Doragon Musume
| NativeTitle = エルフ娘とドラゴン娘
| NativeTitleLangCode = ja
| DirectedBy = Takashi Asami
| WrittenBy = Kan'ichi Katō
| Aux2 = ROMANoV HiGA
| OriginalAirDate = {{Start date|2025|2|1}}
| ShortSummary = As they eat breakfast, Stella thinks that Aria is strong since she is Tama's master. Tama makes Stella promise not to tell anyone he is a behemoth. Vulcan makes Stella some armor and she chooses a massive sword and shield as her weapons. She demonstrates that she can turn her hands into dragon claws and grow a dragon tail at will. They explore the dungeon, but Stella keeps recklessly charging ahead. She is almost defeated by a roper until Tama saves her, making her calm down and agree to work with the others. As they bathe in a spring, Aria and Stella argue about who deserves Tama and get angry when Vulcan suggests they all share him. They return to the guild so that Arnold can register Stella as an adventurer. A man named Reiss asks for help protecting a shipment. Vulcan cannot come because she has a blacksmithing job. Stella is shocked to learn the shipment is the skeleton of her previous earth dragon body.
}}
{{Episode list
| EpisodeNumber = 6
| Title = Girls of the Wandering Woods
| TranslitTitle = Mayoi no Mori no Shōjo-tachi
| NativeTitle = 迷いの森の少女たち
| NativeTitleLangCode = ja
| DirectedBy = Shigeki Awai
| WrittenBy = Toshiaki Satō
| Aux2 = Shin Matsuo
| OriginalAirDate = {{Start date|2025|2|8}}
| ShortSummary = Before they leave, Arnold promotes Aria to Rank B. Reiss, Aria, Stella, and Tama transport the skeleton by wagon to his hometown of Gladstone. After fending off monsters, they make camp and Reiss gifts Aria some lily of the valley, his fiancee Eliza's favorite flower. He says the skeleton is for raw materials because a war is coming soon. A forest-like labyrinth emerges in their path, but they escape and reach Gladstone. Reiss thanks them and lets them explore the labyrinth. Voices lure them to some hostile apes, but after defeating them, the voices surrender and reveal themselves as the dryad Feri and the tiny fairy Lily. The two give them a potion and a key to a boss room. The group takes them in and they go to Gladstone, but must teach them concepts like paying for food. Reiss examines the potion and says it is Drop of Truth, a powerful truth serum. When he sees Feri and Lily, he is shocked and excuses himself. The group bathes and Tama nearly goes crazy when the others grope Aria. Vulcan finishes her job and rushes to Gladstone on foot. She is attacked by and defeats a skeleton, but hears a bell and sees some lily of the valley. The group returns to the boss room and defeats a torrent drake. They find a scroll that instantly gives Aria the ability to turn her daggers into holy blades. Feri and Lily are suddenly kidnapped. Reiss rings a bell and tells a portrait of Eliza that he'll be able to bring her back soon.
}}
{{Episode list
| EpisodeNumber = 7
| Title = Undead on Approach Dark Tales of the Earl
| TranslitTitle = Semari Kuru Andeddo Hakushaku-ryō no Kuroi Uwasa
| NativeTitle = 迫りくるアンデッド 伯爵領の黒いうわさ
| NativeTitleLangCode = ja
| DirectedBy = Keita Nakano
| WrittenBy = Tetsuo Hirakawa
| Aux2 = Takayuki Inagaki
| OriginalAirDate = {{Start date|2025|2|15}}
| ShortSummary = Aria, Stella, and Tama cannot find Feri and Lily, then Vulcan arrives and they fill her in. A butler says the Earl of Gladstone requests their presence. As they travel to him, Vulcan says she heard rumors of girls disappearing around Gladstone. The Earl, a fat and ugly man, asks the three girls to be his mistresses and tries to serve them drugged tea, but Tama neutralizes it. They interrogate him, but he doesn't know about Feri and Lily. The town gets attacked by skeletons. Vulcan guards the people while Aria, Stella, and Tama find Reiss summoned them with his bell and kidnapped Feri and Lily to drain their mana. He wants revenge against the Earl for killing Eliza and reanimates the earth dragon skeleton. They battle it and Aria destroys the skeleton with her holy blade skill while Tama rescues Feri and Lily. One of the skeletons reveals herself as Eliza and tells Reiss not to seek revenge, destroying his will to fight as the bell and the skeletons disappear. Reiss is arrested and sentenced to the guillotine, but Aria serves the Earl tea laced with Drop of Truth, making him confess that he and his butler raped and murdered several women including Eliza. The enraged townspeople turn on them. The Earl, the butler, and Reiss are all sentenced to life in prison. Feri and Lily have joined the party and they all bathe and argue who deserves Tama.
}}
{{Episode list
| EpisodeNumber = 8
| Title = The Elf Girl Makes a Move
| TranslitTitle = Erufu Musume no Ohikkoshi
| NativeTitle = エルフ娘のお引越し
| NativeTitleLangCode = ja
| DirectedBy = Takashi Asami
| WrittenBy = Kan'ichi Katō
| Aux2 = Yoshihiro Takamoto
| OriginalAirDate = {{Start date|2025|2|22}}
| ShortSummary = The party comes home and Arnold promotes Aria to Rank A and Stella to Rank B, but Vulcan turns down a promotion. Gladstone gifted the party a ten year supply of preserves, but they have no room to store them. Arnold suggests they move into a new house and they agree. That night, Tama learns his behemoth form has evolved, making Stella even more attracted to him. The next day, Feri grows a World Tree and Lily creates a Fountain of Life in the yard, but Vulcan warns everyone to keep them secret. Arnold says a monster in the dungeon has killed people, so the party enters and slays goblins and a massive troll. As the party bathes, Aria realizes the party is her new family and vows to protect them. Meanwhile, knights separately tell the emperor and Alisha that monster attacks are intensifying, possibly due to the demons.
}}
{{Episode list
| EpisodeNumber = 9
| Title = Fated Reunion in the Imperial City!
| TranslitTitle = Teito e! Unmei no Saikai
| NativeTitle = 帝都へ！ 運命の再会
| NativeTitleLangCode = ja
| DirectedBy = Shigeki Awai
| WrittenBy = Toshiaki Satō
| Aux2 = Fumikazu Satō
| OriginalAirDate = {{Start date|2025|3|1}}
| ShortSummary = Arnold tells the party that Emperor Geisel Auschra has summoned them, but Vulcan is nervous. They take a wagon to the imperial capital and are escorted to the emperor and Prince Julius. After the emperor thanks them for saving Gladstone, it is revealed that Vulcan knows them since she was once the royal smith and a veteran of the war against the demons. A demon ally named Lady Belzebuth, who can read minds, arrives. She says she needs help because four demons plan to unseal the 7th demon king, Mammon, and revive the God of Darkness. They have Vulcan forge new weapons, Julius train Stella, Belzebuth teach Feri and Lily new spells, and ask the retired Alisha to train Aria. Aria is starstruck to meet her again. During sparring, Alisha easily beats Aria with a wooden sword and Julius easily beats Stella with his superior skill, but they slowly improve. While they bathe, Alisha and Belzebuth reveal they are both married to the Grand Mage, who is from Japan and transported from Earth, but is busy and cannot help them. Alisha tells Tama she knows he is a behemoth, but will keep the secret. Eventually, the four demons are detected in separate locations. Cedric and his party will deal with two of them, but one is in Alisha's hometown of Alphes and one is in Ruine, the town the party lives in.
}}
{{Episode list
| EpisodeNumber = 10
| Title = The Powers of Tama and Aria
| TranslitTitle = Tama to Aria no Mezameru Chikara
| NativeTitle = タマとアリアの目覚める力
| NativeTitleLangCode = ja
| DirectedBy = Yūji Kanzaki
& Keita Nakano
| WrittenBy = Tetsuo Hirakawa
| Aux2 = ROMANoV HiGA
| OriginalAirDate = {{Start date|2025|3|8}}
| ShortSummary = Alisha goes to Alphes alone while Aria's party and Julius go to Ruine. They meet Cedric's party (Cedric decided go alone) and enter the dungeon. After demonstrating their new skills and weapons on some monsters, Cedric's party is occupied fighting trolls while the rest meet the demon Vasaago. Vasaago summons a cyclops and orthus to fight the party while he fights Julius. Julius is quickly knocked out and Vasaago escapes to the demon realm. When the party starts losing, Tama has no choice but to transform into his evolved behemoth form. In Alphes, Alisha finds the demon Revi bathing. Revi turns into a dragon while boasting of her power, but Alisha effortlessly kills her. Aria and the others mistake Tama's form for a holy beast. When outmatched, the orthus and cyclops commit suicide to perform a powerful flamethrower and create a homing lance respectively. Tama matches the flamethrower with his own while Stella blocks the lance expecting to die. Aria awakens a new skill, Excalibur, and fires a holy blast that destroys the lance and the orthus' body. Tama reverts to his cat form. Back in the capital, Belzebuth says Vasaago's forces move towards Aria's home village of Lumines, after the Philosopher's Stone stored there. Everyone volunteers to defend it.
}}
{{Episode list
| EpisodeNumber = 11
| Title = The Philosopher's Stone & the Secret of Lumines
| TranslitTitle = Kenja no Ishi to Rumirusu no Himitsu
| NativeTitle = 賢者ノ石とルミルスの秘密
| NativeTitleLangCode = ja
| DirectedBy = JOL-chan
| WrittenBy = Kan'ichi Katō
| Aux2 = Hong Min-seok
| OriginalAirDate = {{Start date|2025|3|15}}
| ShortSummary = Everyone, including Arnold, sails to Lumines, but Cedric is still busy. They are greeted by the village chief Elvan, and a squad led by the Amazon Gusione and Aria's mother Leona. After the party meets Aria's friend Fionne and her elemental cat Leo, Elvan shows them the Philosopher's Stone is stored in a massive tree. Leona hosts the party and Aria is worried about her getting hurt, but Leona assures her that she became a warrior to defend the village. Gusione tries to steal the Philosopher's Stone, but Alisha unmasks her as a demon and kills her. Gusione's owl familiar escapes and reports to Vasaago, who opens portals to let his army invade the village. Alisha surrounds the village with a force field that kills the demons on contact, but Vasaago is uncaring and crashes his forces against it until holes are made in it allowing them to enter. After Julius makes a rousing speech, everyone charges into battle.
}}
{{Episode list
| EpisodeNumber = 12
| Title = Sacred Blade & Beast
| TranslitTitle = Seinaru Yaiba to Seinaru Kemono
| NativeTitle = 聖なる刃と聖なる獣
| NativeTitleLangCode = ja
| DirectedBy = Keita Nakano &
Takashi Asami
| WrittenBy = Tetsuo Hirakawa
| Aux2 = Kin'ya Nakamura
| OriginalAirDate = {{Start date|2025|3|22}}
| ShortSummary = As everyone battles Vasaago's forces, Cedric arrives and saves Arnold from a sneak attack, then they fight together. Vasaago summons the dragon Nidhogg and rides it into battle. Tama takes his evolved behemoth form and Aria rides him to take the pair on. Vasaago gets past them, breaks into the tree, and has Nidhogg swallow the Philosopher's Stone before trying to ride it through a portal to the demon realm in the sky. Aria jumps on Nidhogg and tries to fight Vasaago, but jumps off when she notices Tama hesitating out of fear of hitting her. Tama and Nidhogg clash, then while still falling, Aria blasts them with Excalibur, vaporizing Vasaago and Nidhogg while leaving the Philosopher's Stone intact. Tama catches both while the demons retreat. Tama returns to cat form and everyone celebrates with a feast. Vulcan beats Howard in a drinking contest. Julius asks Stella to join his army, but is refused. Belzebuth praises Lily and Feri for their part in the battle and conjures exotic food. Alisha grants Aria and Tama the titles Sacred Blade and Sacred Beast. Upon returning to Ruine, everyone is praised as heroes. While the party bathes, Aria, Vulcan, and Stella beg Tama to take his behemoth form and have sex with them, horrifying him. The party later wanders as Tama narrates that they have many adventures ahead and he will continue to protect Aria and their friends.
}}
}}
Notes
{{notelist}}
References
{{reflist}}
External links
- {{Official website|https://ncode.syosetu.com/n9107ee/|Web novel}} at Shōsetsuka ni Narō {{in lang|ja}}
- {{Official website|https://web.archive.org/web/20190425191439/http://micromagazine.net/gcn/behemoth/|Official light novel website}} {{in lang|ja}}
- {{Official website|https://younganimal.com/series/c909ad9c5cd69|Official manga website}} {{in lang|ja}}
- {{Official website|https://behemoth-anime.com/|Official anime website}} {{in lang|ja}}
- {{ANN|manga|22293}}
{{Young Animal}}
{{Zero-G (studio)}}
Category:2025 anime television series debuts
Category:Adventure anime and manga
Category:Animated television series about cats
Category:Anime and manga based on light novels
Category:Comedy anime and manga
Category:Comics about anthropomorphic cats
Category:Comics about talking animals
Category:Elves in popular culture
Category:Fantasy anime and manga
Category:Fiction about reincarnation
Category:Japanese adventure novels
Category:Japanese comedy novels
Category:Japanese fantasy novels
Category:Light novels first published online