[1] Sekino studied at Nishida Takeo's Japanese Etching Institute and enrolled at private school to learn oil painting and drawing.
Alongside further depictions of artists such as Shikō Munakata and Onchi, it became one of his most renowned pieces, and established him as the country's pre-eminent woodblock portraitist.
He also taught at the University of Washington and worked in New Mexico at the Tamarind Studio where he studied with Glen Alps, the inventor of collography.
His years of studying printmaking techniques enabled him to produce work of a consistent and extremely high quality, in excess of most of his contemporary sosaku hanga artists.
Onchi honoured him in allowing Sekino to reprint his Portrait of Hagiwara Sakutaro, and he assisted Maekawa Senpan in his Hot Spring Notes series.