He was a substantial leader in the Otani Expedition, which was an academic investigation team organized from 1902 to 1904 by Kozui OTANI, the twenty-second chief priest of the True Pure Land sect Hongan-ji school.
1902年～1904年に浄土真宗本願寺派の第22世門主大谷光瑞が組織した学術調査隊・大谷探検隊では実質的リーダーを努めた。