Concours de Genève
He graduated from the Paris Conservatory in 1978, and is former concert master of Chamber Orchester in Lausanne, Bamberger Symphniker and Wurttembergischen Kammerorchester Heilbronn. Yumino is currently Assistant professor of Toho Gakuen School of Music. In 1980 he and Annick Roussin both finished second in the Geneva International Music Competition, no first prize was awarded.