S-Rank Monster no "Behemoth" Dakedo, Neko to Machigawarete Elf Musume no Pet to Shite Kurashitemasu

In this isekai fantasy anime, a valiant knight perishes in battle only to find himself reincarnated into a new world not as a hero, but as a legendary S-Rank Monster—the mighty Behemoth. However, his new form as a juvenile has a peculiar catch: he looks exactly like an adorable house cat.

His bewildering new life takes an unexpected turn when a compassionate elf adventurer, mistaking him for a harmless feline, rescues him and adopts him as her pet. The anime follows the humorous and heartwarming journey of this powerful creature living incognito, exploring themes of identity, found family, and the contrast between monstrous power and innocent appearance, all while navigating the bonds he forms with his elf companion.