The only problem is that a baby behemoth looks an awful lot like...an adorable house cat?! Things grow even more confusing when a beautiful elf adventurer rescues him from the brink of death ...

I Am Behemoth of the S Rank Monster, but I am Mistaken as a Cat and I Live as a Pet of Elf Girl. I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet S Rank ...

Additional cast members have arrived for the I'm a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl's Pet anime ...