We have an archive of the past 5 years of the Hamamatsu University School of Medicine exam papers that you can look at, to give you an idea of what to expect from your exams, and can be a useful revision aid.
They are held in the Admissions Division. It may be possible to look on request. Pease ask the Admissions Division for the detail.
1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 435-3192 Japan
Open hour: Mon-Fri 8:30-12:00, 13:00-17:15