Overview
Sun-Il (Yoo Son-Il) lost his friend because of an accident. So he left to travel. One year later, he appears in front of friends again, but Sun-Il resembles his dead friend a lot. His friends keep watching him. Their friendship is in critical condition unlike the past. One day, he falls in love. Sun-Il has the happiest and sweetest moment in his life with Ji-Soo (Park Grina), but because of an unexpected incident Sun-Il feels strange with himself.
| Actor | Age then | Age now | |
|---|---|---|---|
 | - | - | |
 | 26 | 40 | |
| 30 | 45 | |
| 25 | 40 | |
| - | - | |
| - | - | |
 | 33 | 48 |