18 어게인

Lee Do-hyun

Hong Dae-young / Go Woo-young

김하늘

Jung Da-jung

윤상현

Hong Dae-young (37 years old)

노정의

Hong Shi-ah

려운

Hong Shi-woo

Wi Ha-jun

Ye Ji-hoon

김강현

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