Naoki Kadoshima was born in 1947 in Amagasaki city, Hyogo prefecture. He graduated from Aichi Prefectural University of the Arts in 1972 and studied under Tamako Kataoka, a well-known Japanese female Nihonga painter. In the same year, he was accepted for the first time into the 57th In-ten Exhibition. He completed his training at the graduate school of Aichi Prefectural University of the Arts in 1975 and participated in the university’s commissioned project, the replication of Horyuji temple’s Kondo wall paintings. Kadoshima became a full-time assistant for the Nihonga department at Aichi Prefectural University of the Arts in 1986, and later became a Nihonga lecturer in 1993. From 2004 to 2013, he fostered young artists as a Nihonga professor. In 2005, he received honorable mention and the Adachi Museum Award for the works entered in the 90th In-ten Exhibition. He also supervised the painting of the Large Scroll at Craftsmanship Gallery in Nagakute-Aichi Hall during Expo 2005 in Aichi, Japan. Kadoshima is currently a Tokutai rank member of Japan Art Institute (Nihon Bijutsuin), and is a professor emeritus at Aichi Prefectural University of the Arts.