Overview
Private Detective Kiyoshi Mitarai and Miyuki Ogawa arrive in Fukuyama, Hiroshima Prefecture. They are interested in a case which involves discovered bodies. The bodies were found drifting in the Seto Inland Sea, where the currents repeat every 6 hours.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 36 | 45 | |
 | 21 | 30 | |
 | 44 | 53 | |
 | 35 | 44 | |
 | 25 | 35 | |
 | 47 | 56 | |
 | 61 | 70 | |
 | 54 | 63 | |
 | 46 | 55 | |
 | 64 | 74 |