- club . ▁After ▁her ▁mother ▁rem ar ries ▁and ▁moves ▁to ▁Yam ag uch i ▁Pref ect ure , ▁Man amo ▁lives ▁by ▁herself ▁in ▁H iro sh ima . ▁ ▁One ▁day , ▁her ▁younger ▁sister ▁Min amo ▁returns ▁from ▁London ▁to ▁visit ▁Man amo . ▁It ▁is ▁ten ▁years ▁since ▁they ▁have ▁lived ▁together , ▁and ▁they ▁argue ▁every ▁day . ▁ ▁Cast ▁ ▁Ka ela ▁Kim ura ▁as ▁" Man amo ▁Kob ay ashi ", ▁an ▁ 1 8 - year - old , ▁ 3 rd - year ▁student ▁of ▁H iro sh ima ▁Min ami ▁high ▁school , ▁lives ▁in ▁Y ok og awa , ▁N ishi - ku , ▁H iro sh ima , ▁dream s ▁to ▁be ▁a ▁singer , ▁vocal ▁of ▁" F ive ▁Dim ension ▁Custom s ". ▁ ▁E ri ka ▁N ish ik ado ▁as ▁" Min amo ▁Kob ay ashi ", ▁Man amo ' s ▁younger ▁sister , ▁ 1 5 - year - old , ▁ 2 nd - year ▁student ▁of ▁Royal ▁Academy ▁of ▁Music , ▁comes ▁back ▁to ▁H iro sh ima ▁from ▁London . ▁ ▁Tam io ▁Ok uda ▁as ▁" ▁Tam io ▁Ok uda ", ▁ 3 9 - year - old ▁singer , ▁himself . ▁ ▁H aj ime ▁An za i ▁as ▁" T aku ji ", ▁Man amo ▁and ▁Min amo ' s ▁father , ▁lives ▁in ▁London . ▁ ▁Carol yn ▁K aw as aki ▁as ▁" R isa ", ▁Man