A new salesman named Kosuke Okuda happens to meet Mao Watarai, a friend from his middle school days. Back then, Mao was called stupid and bullied, but now she is an attractive woman. Kosuke and Mao fall in love and decide to marry, but Mao has a secret.
| Actor | Role |
|---|---|
 Juri UenoMao Watarai | Mao Watarai |
 Jun MatsumotoKosuke Okuda | Kosuke Okuda |
 Tetsuji TamayamaHaruki Sindo | Haruki Sindo |
 Masaki SudaShota Okuda | Shota Okuda |
 Koji OhkuraSusumu Tanaka | Susumu Tanaka |
 Mitsuki TanimuraYuri Minegishi | Yuri Minegishi |
 Takumi KitamuraYoung Kosuke Okuda | Young Kosuke Okuda |
 Wakana AoiYoung Mao Watarai | Young Mao Watarai |
 Toko MiuraShiota | Shiota |
 Kazutoyo KoyabuDepartment Head Sugihara | Department Head Sugihara |
 Naomi NishidaKosuke's Mother | Kosuke's Mother |
 Midori KiuchiMao's Mother | Mao's Mother |
 Sansei ShiomiMao's Father | Mao's Father |
 Maho ToyotaMao's Boss | Mao's Boss |
 Mari NatsukiOhsita | Ohsita |
 Hiroya ShimizuKosuke & Mao's Classmate in Middle School | Kosuke & Mao's Classmate in Middle School |