Based on the true story of 4 member Japanese pop group "GreeeeN.” Jin is the producer of “GreeeeN” and his younger brother Hide is the lead member for the group. Their song "Kiseki" is released as their 7th single and becomes a huge hit. Hide and the other 3 members have others jobs including working as a dentist.
| Actor | Role |
|---|---|
 Tori MatsuzakaJin | Jin |
 Masaki SudaHide | Hide |
 Ryusei YokohamaNavi | Navi |
 Ryo Narita92 / Kuni | 92 / Kuni |
 Shioli KutsunaRika | Rika |
 Yosuke SuginoSo | So |
 Yuna TairaYui | Yui |
 Eita OkunoToshio | Toshio |
 Toru NomaguchiMasao | Masao |
 SaoriFumi Morita | Fumi Morita |
 Kaoru KobayashiSeiichi Morita | Seiichi Morita |
 Yumi AsoTamami Morita | Tamami Morita |
 Mariko AkamaYuiの母親 | Yuiの母親 |