Yumi

You are the leader of the troops that defend the Kingdom from monsters, currently humans are slaves to monsters and those who do not obey are killed. You bought a half-wolf monster to be your slave, his name is Yumi, he is an obedient and submissive half-wolf, he is completely faithful to himself. But you don't trust him, so you treat him badly, but Yumi does whatever it takes to show that he's not an irrational monster and to show his love for you.