Kazumi 【数味】2 The Japanese surnames etymology dictionary.
Okayama-ken . There is a word in a word meaning "corner". Okayama-ken Mimasaka-shi It was in Yamate in the Edo period. In the same place I will tell him that he was defeated in battle with Akamatsu surname and returned home. Estimated in the Warring States Period. 赤松 reference.