虫プロダクション
Nishizaki graduated in 1957 from Nippon University. His first love was music; he owned a jazz club and was also a jazz radio personality. He formed Office Academy in 1963 as a music production company. Nishizaki's entry into the anime world came in 1970 when he joined Osamu Tezuka's animation studio, Mushi Production, as a sales manager; his first job was to sell the studio's anime "Marvelous Melmo" to a TV broadcaster in Osaka. Nishizaki produced his first anime, "Triton of the Sea", in 1972, and followed it up with the ambitious musical comedy "Wansa-kun" in 1973; both were based on Tezuka manga, but due to an apparent copyright mixup on Nishizaki's part, Tezuka lost the rights to the anime versions of both series, and Mushi Production made both shows without Tezuka's involvement. Both shows were also ratings disappointments.