Supercopa de Japón
In order to avoid the civil war of Yugoslavia, Zemunović and his family decided to move to Japan and he started his coaching career in Japan as a coach of Tosu Futures for a year. After working for a couple of amateur clubs in Chiba, Japan, He became the general manager of the youth and junior youth team of Shimizu S-Pulse in 1999 and cultivated young talents such as Takuma Edamura and Kota Sugiyama. In December 2000, he took up the post of the manager of Shimizu S-Pulse as the successor of Steve Perryman and won the Emperor's Cup on 1 January 2001 and also won the Japanese Super Cup next month.