Overview
Kim Dae-han (a lively, irresistible college student passionate and impulsive) shatters his vow of purity in a single night. The story takes a turn when Go Jeong-woo, a psychology professor well past thirty and still inexperienced, finds herself unexpectedly drawn to her student.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 29 | 46 | |
 | 25 | 43 | |
 | 31 | 49 |