First generation K-pop boy group Sechskies look back on their 18 years as a K-pop idols and prepare for their 20-year anniversary.
| Actor | Role |
|---|---|
 Eun Ji-wonNot listed | Not listed |
 Kim Jae-duckNot listed | Not listed |
 Lee Jai-jinNot listed | Not listed |
 Kang Sung-hoonNot listed | Not listed |
 Jang Su-wonNot listed | Not listed |