An eight-year-old boy and his aunt, a screenwriter, spend a summer at her late grandfather's house. Through his diary, the two discover about his past during war.
| Actor | Role |
|---|---|
 Rei HiranoNot listed | Not listed |
| IIruta ShibuyaNot listed | Not listed |
 Eriko NakamuraNot listed | Not listed |
| AAkira TakeuchiNot listed | Not listed |