A 16-year-old high school student Midori Matsumoto was found dead on the banks of the Tama River. The only clue is shoe marks on rubber soles. From the interview of witnesses, it became clear that Midori was walking with a guy last night. In addition, it turned out that Midori was close to a college student Kimoto, and a high school student Miyazaki. According to his friends, Miyazaki had an alibi, but Kimoto did not. A unique work in which the problems of teenage sex are considered from the point of view of the murder of a girl. The 21nd work from the popular series "Keishicho Monogatari", which documents the activities of the First Investigation Division of the Capital Police Department.
| Actor | Role |
|---|---|
 Yūji HoriDetective Nagata | Detective Nagata |
 Tokue HanazawaDetective Hayashi | Detective Hayashi |
 Hiroshi MinamiDetective Azuma | Detective Azuma |
 Rinichi YamamotoDetective Kaneko | Detective Kaneko |
 Shigeko AraiNot listed | Not listed |
 Mamoru OgawaNot listed | Not listed |
 Takashi KandaChief Detective | Chief Detective |
| SShirō ŌkiDetective Takatsu | Detective Takatsu |
 Ken SudoDetective Watanabe | Detective Watanabe |
 Genji KawaiNot listed | Not listed |
| YYuji KitamineNot listed | Not listed |
| YYuki KashimaNot listed | Not listed |
 Kyoko ShinobazuNot listed | Not listed |
| KKatsujirō NaitōNot listed | Not listed |
| SSeiya SatōNot listed | Not listed |
| SSanae MitsuokaNot listed | Not listed |
| RRika FujieNot listed | Not listed |
| 岩岩根正子Not listed | Not listed |
| NNenji KobayashiNot listed | Not listed |
 Hideo SunazukaNot listed | Not listed |
| 田田村雪枝Not listed | Not listed |
 Ichirô KojimaNot listed | Not listed |
| TToshiko OkadaNot listed | Not listed |
 Kuniko MiyakeNot listed | Not listed |
| JJun TakigawaNot listed | Not listed |
 Yoshi KatōNot listed | Not listed |