Main characters:
Kim Myungwoo (portrayed by MINHYUK)
Cho Bonhwa (portrayed by SUHO)
Kim Minseong (portrayed by FELIX)
Lee Daesun (portrayed by HAKYEON)
Park Minsook (portrayed by KANG DANIEL)
Choi Kichul (portrayed by MINHYUN)
Bang Minjoon (portrayed by BANG CHAN)
Gam Hyunki (portrayed by YOOK SUNGJAE)
Kang Sikyung (portrayed by SUZY)
Hwang Joochan (portrayed by HWANG INYEOP)
Kim Sunsook (portrayed by WINTER)
Kim Sunyoung (portrayed by IU)
Additional characters:
Cho Moonhye (portrayed by KIM HYEYOON)
Do Chungmoo (portrayed by JB)
Do Daejoon (portrayed by HYUNSIK)
Do Mijoo (portrayed by YEJI)
Ga Doha (portrayed by JANG KIYONG)
Hwang Kyungchan (portrayed by LEE JUNKI)
Jung Doyeon (portrayed by JUNG HAEIN)
Jung Eunkyung (portrayed by YOO INNA)
Kang Seung-ah (portrayed by IRENE)
Kim Kwangho (portrayed by JIN)
Kim Namhee (portrayed by MARK LEE)
Kim Sungmi (portrayed by KIM YOOJUNG)
Lee Beomgyu (portrayed by LEE SEUNGGI)