In May 1923, Shimizu was selected the Japan national team for Far Eastern Championship Games in Osaka. At this competition, on May 23, he debuted against Philippines and scored a goal in the 5th minute. However, Japan was lost at the end. This match is Japan team first match in "International A Match" and this goal is Japan team first goal in International A Match. Next day, he also played against Republic of China. But Japan lost in both matches (1-2, v Philippines and 1-5, v Republic of China). He played 2 games and scored 1 goal for Japan in 1923.