i am behemoth of the s rank monster but i am mistaken as a cat and i live as a pet of elf girl

a brief description of the manga i am behemoth of the s rank monster but i am mistaken as a cat and i live as a pet of elf girl: 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. tama was a reincarnated man and his real form wasn’t just a regular cat. on the contrary, he’s a s-class monster, a young hippo.