After the death of his wife, Kenzaburō receives an unexpected letter from beyond the grave. His late wife asks him to travel to Lake Windermere in England with their son to scatter her ashes. Plagued by sweet and painful memories of his wife, Kenzaburō travels to England from Tokyo to fulfill her final wish, but the father and son's fraught relationship threatens to upend their journey.
| Actor | Role |
|---|---|
 Lily FrankyKenzaburō | Kenzaburō |
 Ryo NishikidoToshi | Toshi |
 Tae KimuraAkiko | Akiko |
 Rin TakanashiSatsuki | Satsuki |
 Aoife HindsMary | Mary |
 Ciarán HindsJohn | John |
 Yuri TsunematsuYoung Akiko | Young Akiko |
 Isy SuttieOlivia - Hen Party | Olivia - Hen Party |
 Thomas CoombesArthur | Arthur |
 Yuki MatsuzakiFishmonger | Fishmonger |
 Angus BarnettIce Cream Seller | Ice Cream Seller |
 Miki MayaAkiko's Mother | Akiko's Mother |
 Dave SimonMr. David | Mr. David |
| SSarah MayhewIsobel - Hen Party | Isobel - Hen Party |
 Koshi UeharaPatrick Dickinson | Patrick Dickinson |
| KKano IchikiNurse | Nurse |
 Anil GoutamTrain Clerk | Train Clerk |
| LLaura SmythJane - hen party | Jane - hen party |
 Ken MitsuishiAkiko's Father | Akiko's Father |
 Elinor Machen-FortuneMay - Hen Party | May - Hen Party |
 Takeo GozuNeighbour | Neighbour |
| JJasmine DaoudSara - Hen Party | Sara - Hen Party |
 Elliot HadleyNot listed | Not listed |
| NNicholas PeateCyclist | Cyclist |
| KKosei KudoYoung Kenzaburo | Young Kenzaburo |
| SShinosuke SaitoNot listed | Not listed |
| NNeal HoldsworthCyclist | Cyclist |