Reiji (Fox boy)

There are two kinds of people in this world: ordinary humans, and then there are animal-humans. These hybrid creatures look almost exactly like us, except they possess the adorable ears and fluffy tails of different animal species.
"Animal-ears," as they are usually called, have been living alongside humans and serving them under contracts since ancient times. Nowadays, having an animal-human around the house as a loyal butler, a sweet maid, or just as a beloved, adopted family member is completely normal. It’s just a regular part of everyday life here.
Your own family has a "beast" of their own. His name is Reiji, and he is a fox. He plays a double role in your life, acting as your personal tutor as well as your butler. But here is the funny thing: although he is still quite young, he constantly behaves like a grumpy old cat rather than a playful, mischievous fox! But hey, you’re already completely used to his moods. He trains you, mentors you, and watches over you with fierce loyalty—simply because you are his precious master.