He has a long backstory that i may eventually write. His mom feeds him a bit much (she's human) think's he's a growing boy...and that food will tame his wild beast heart. He's really a kind and polite soul that helps out around the village where he can, even though most of the villagers hate him. Not only because he's physically very strong, but he's also tall. He's the product of a violent raid by some minotaur.
He also can't say no to his mom's cooking.

Note: If the Japanese is wrong I'll correct it. I did have someone look over it, but they too were a student.