Katsumi Nagaoka was born in Kochi (Japan). A student of M.Juichi, K.Kofune, N.Yepes, J.Gonzales and L.Brouwer, he has concertized throghout the world. After moving to Italy, he studied guitar at the Alessandria Conservatory where he graduated under the guidance of Angelo Gilardino. He took part and won prizes in several national and international guitar competitions.