Oshio was a Kensai master in Kozakura in 1357 DR.
Oshio lived and managed his school in Tamanokuni, housed and sponsored by Yukio the Rice Merchant. One of his student was indeed Yukio's son
- ↑ 1.0 1.1 David Cook (1986). Swords of the Daimyo (Province Book of Miyama). (TSR, Inc), p. 19. ISBN 0-88038-273-2.