A karate shihandai, he has his own dojo. His grandfather was the previous cat. After Kyo's mother died, Kazuma took in Kyo, who was abandoned by his father, and raised him as his son.

Kazuma deeply regrets having rejected his grandfather, who was the previous cat, when he was a child. Originally wanting to atone for this, Kazuma took in Kyo. However, now, the two share a deeper bond than most families. For a while, the two had gone out to train, but now, he has returned and re-opened his dojo.

He had a girlfriend for awhile, but ended up breaking up after a number of misunderstandings.

However, a part of him is completely pre-occupied with his son and he seems very satisfied with that.

While not blood related, he seems like he should've been, and indeed ended up, a father and that doting parent aspect is so strong that one might think it even beats Kyoko's.

Ah, on top of being a bit inept in truth, he has no sense of flavour in cooking.