The first Rai Kinmichi was, together with the elder brother brother Iga no kami Kinmichi, Tamba no kami Yoshimichi, and Etchu no kami Masatoshi, son of Kanemichi of Seki, who sometime during the Eiroku era (1558-1570) went to Kyoto. The Sanpin group, as they became known came to exert considerable influence in the allocation of titular honours during the Edo period. Successive generations of the family exercised the right to carve the chrysanthemum mon on the tangs of their work. The third generation Rai Kinmichi was granted the title Izumi no kami during the Enpo era (1673-1681), inherited by the fourth generation. This blade appears to be by Kinmichi III.