Cast of 18 Again
Main cast
Lee Do-hyunas Hong Dae-young / Go Woo-young
Kim Ha-neulas Jung Da-jung
Yoon Sang-hyunas Hong Dae-young (37 years old)
Roh Jeong-euias Hong Shi-ah
Ryeounas Hong Shi-woo
Wi Ha-junas Ye Ji-hoon
Kim Kang-hyunas Go Deok-jin
Lee Mi-doas Choo Ae-rin
Han So-eunas Young Jung Da-jung
Choi Bo-minas Seo Ji-ho
Hwang In-yeopas Goo Ja-sung
Kim Yoo-rias Ok Hae-in
Lee Ki-wooas Choi Il-kwon
Ahn Nae-sangas JBC Director
Yoon Byul-haas Ye Seo-yeon
Ko Eun-minas Lim Ja-young
Kim Sun-minas Choi Il-kwon [Young]
