Painter. In 1853, she studied under HIRATA Suiseki, a student of TANI Buncho, and called herself Sekiho. Afterwards, she studied privately with WATANABE Kazan and learned calligraphy from KOYAMA Kagai and KOYAMA Goko. In 1865, she became an adopted daughter of the Okuhara family, her maternal relatives, and moved to Tokyo, where she took the name Seiko and opened a painting studio called Bokutoenunro. In 1874, she organized Shitaya Bunjin Group Hankansha with Confucian scholar WASHIZU Takedo, painter KAWAKAMI Togai, and others. She had over 300 students and was known as a female master with a dynamic spirit. With the decline of Nanga, she left the Chuo Painting Circle in 1891 and retired to Kumagaya, Saitama Prefecture, where she painted austere colored paintings.