Kota and Kosuke, from the Hikyaku-ya shop in Edo, went to Kyoto. Contrary to their carefree appearance, they carry a secret letter concerning the Aoba clan from Kyoto. A samurai who calls himself Okuma Danemon joins them on their journey, and soon people begin to appear one after another, seeking to get a secret letter...
| Actor | Role |
|---|---|
 Kōkichi TakadaKosuke | Kosuke |
 Kōtarō SatomiKota | Kota |
 Atsushi WatanabeNot listed | Not listed |
 Hiromi HanazonoOsaki | Osaki |
 Kyoji SugiSakubei | Sakubei |
 Kōtarō BandōOkuma Danemon | Okuma Danemon |
 Keiko YukishiroNot listed | Not listed |
 Tetsunosuke TsukigataNot listed | Not listed |
 Kensaku HaraNot listed | Not listed |
| SShigeshiro KobayashiNot listed | Not listed |
| KKazuo TokitaNot listed | Not listed |
 Koji ArimaNot listed | Not listed |
| AAtsuko NakazatoNot listed | Not listed |
 Ryūji ShinagawaNot listed | Not listed |
| AAyuko UesugiharaNot listed | Not listed |