A young boy, Atsu, grows up along the banks of the Shimanto River in rural southern Shikoku. He comes to grips with the unfairness of life and the emotional pain involved in the loss of innocence. The film is based on an autobiographical novel written by Kyuzo Sasayama.
| Actor | Role |
|---|---|
 Kanako HiguchiNot listed | Not listed |
 Kaori TakahashiNot listed | Not listed |
 BengalNot listed | Not listed |
 Meika SeriNot listed | Not listed |
 Kōen OkumuraNot listed | Not listed |
 Aoi NakajimaNot listed | Not listed |
 Takahito HosoyamadaNot listed | Not listed |
 Renji IshibashiNot listed | Not listed |
 Shiro SanoNot listed | Not listed |
 Kin SugaiNot listed | Not listed |
 Kaoru KobayashiNot listed | Not listed |
| TTeppei YamadaNot listed | Not listed |