When Tetsuya (Yosuke Kubozuka) was 10-years-old he met Emi (Meisa Kuroki), who suffered from a heart disease. In hopes to cure Emi's condition, Tetsuya decided to become a doctor. Following through on his dreams, Tetsuya is now a doctor and is about to marry Emi. One day though, Tetsuya hears about Don (Edison Chen). Tetsuya remembers the times he spent with Emi and Don as a child and also feels insecure about Don.
| Actor | Role |
|---|---|
 Yosuke KubozukaTetsuya Kumagawa | Tetsuya Kumagawa |
 Meisa KurokiEmi Sugiyama | Emi Sugiyama |
 Edison ChenDon | Don |
 Shun SugataJoji Sugyama | Joji Sugyama |
 Taro YamamotoYusaku Kaneko | Yusaku Kaneko |
 Suzuki MatsuoNakata | Nakata |
 Kyôko KishidaAzumaya | Azumaya |
 Noboru MitaniPriest | Priest |
 Mayuko FukudaEmi Sugiyama (young) | Emi Sugiyama (young) |
| KKenji ShioTetsuya Kumagawa (young) | Tetsuya Kumagawa (young) |
 Junichi HarutaNot listed | Not listed |
 Yozaburo ItoNot listed | Not listed |
 Asami MizukawaNot listed | Not listed |
 Moro MorookaNot listed | Not listed |
 Takashi NishinaNot listed | Not listed |
| YYoshiharu TakedaNot listed | Not listed |
 Ken NishidaNot listed | Not listed |
| KKazuhiko TakeuchiNot listed | Not listed |