Tōmi Ōkamiza is, first and foremost, a white wolf and a blacksmith. That's what he deems most important to be known about himself. As for a specific description?
Well, he's a living being that's been around for possibly too long and that tries to act tough and hard when he's actually become a softie for the most part. Born in Gensokyo, he also died in Gensokyo. "Recently", however, he managed to come back to life after spending roughly 20'000 years living as a different being known as "Kuro". Still working alongside said entity's other "trapped" souls and its creator, "the Celestial", the wolf works as a blacksmith by the cottage he owns, dealing in weaponry, more classic forging, and jewelry, while going on adventures from time to time as necessary.
Although in his first chance at life he was a work-a-holic and a loner, after his time spent as Kuro he's become friendly, polite, and eager to learn anything new and meet new people, although there's certainly more to him than just this. Why don't you come and meet him to find out what else can be said about his personality? After all, you can find more about his peculiar background that way, too. Perhaps you can even help him learn something he yet knows not!