18 어게인

이도현

Hong Dae-young / Go Woo-young

김하늘

Jung Da-jung

윤상현

Hong Dae-young (37 years old)

Roh Jeong-eui

Hong Shi-ah

려운

Hong Shi-woo

위하준

Ye Ji-hoon

Kim Kang-hyun

Go Deok-jin

이미도

Choo Ae-rin

Han So-eun

Young Jung Da-jung

최보민

Seo Ji-ho

황인엽

Goo Ja-sung

김유리

Ok Hae-in

이기우

Choi Il-kwon

안내상

JBC Director

윤별하

Ye Seo-yeon

고은민

Lim Ja-young