Lol...nANi!?!'s Things

Ok from what I rem. M/c got hired by like demons(?) disguised as humans in earth to take care of like animals in their world/dimension.
M/c took the offer n got the job. there's a whole barn where he works. there was like a certain one which he tamed, and those animals are like supposed to be hard to tame but he did it yk.
I rem his boss was like a demon king/lordi may be wrong) w long hair. There was also a maid, a girl, shes bad at cooking n ye.
Ih and the animals aren't like ordinary they're like myths/fantasy type.
Pls ive been trying to find it this past month, any help is appreciated .