 While her career as a political activist covered many decades, Hiratsuka is primarily remembered for her stewardship of the "Seitō" group.As a leading light of the women's movement in early twentieth century Japan, she was a highly influential figure whose devotees ranged from pioneering Korean feminist author Na Hye-sok () who was a student in Tokyo during "Seitō"s heyday to anarchist and social critic Itō Noe whose membership in the Seitō organization generated some controversy.Her postwar organization, the New Japan Women's Organization, remains active to this day.