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.

I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet[a] 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.

2025年1月4日 · S-Rank Monster no "Behemoth" dakedo, Neko to Machigawarete Elf Musume no Pet toshite Kurashitemasu. Beheneko: The Elf-Girl's Cat is Secretly an S-Ranked Monster!

At first sight it's just an average cat, but Aria has yet to notice that Tama is a reincarnated chivalrous former Knight and that its identity is not that of a cat, but of a young monster of the strongest class "Behemoth".

2022年2月14日 · Young elf Aria is an adventurer. She has a cute face that attracts almost everyone’s attention. Her breasts are ripe enough to seem ready to explode any minute. And in the embrace of that breast was a little animal… His name was Tama. At first glance, he looked like a cat, but Aria and her entourage couldn’t see the truth.

The story features an unnamed knight that is resurrected in a dungeon as an infant "Behemoth" monster, and picked up by the elf-girl Aria when he gets mortally wounded. After she nurses him back to health, he decides to protect and serve her, for life.

Nobody asked to be a cat!After dying in a fight against the forces of evil, a knight is shocked to discover that instead of being reborn as a hero of humanity, he starts his new life as a behemoth-one of the most powerful monsters in the world!