Gaho learnt painting from his father, Osakuni Hashimoto, and when he was twelve years old, he began studying under Tadanobu Shosenin Kano in Kobikicho. With a fellow student, Hogai Kano, he received instruction from Ernest Fenollosa and Tenshin Okakura. Based on studies of traditional Japanese art, he also incorporated Western painting techniques, leaving fine works. Gaho worked hard to teach younger artists such as Taikan Yokoyama and Shunso Hishida.