How many movies have Toshio Hosokawa and Yuka Mizuhara acted in together?

They have worked on 1 movie together! Their first movie together was 南郷次郎探偵帳 影なき殺人者 (1961) and was their highest rated movie together. They have not worked together since 南郷次郎探偵帳 影なき殺人者 (1961).