Yim Si-wan

as Yoon Yi-jun

as Lee Han-wool / Mantis

as Self

as Self

as Jang Byung-tae

as Self

as Seo Yoon-bok

as Self

as Serenade Man

as Self

as Oh Jun-yeong

as Self

as Ahn Dae-beom

as Self

as Ryu Jin-seok

as Yim Si-wan

as Hwang Dong-joo

as Lee Myung-gi / Player 333

as Self - Host

as Self

as Ki Seon-gyeom

as merry-go-round man

as Self

as Yoon Jong-woo

as Self

as Self

as Ji-baek

as Wang Won

as Jo Hyun-su

as Min-jae

as Self

as Han Sang-yeol

as Jang Geu-rae

as Yoon Yang-ha / Jang Dong-woo

as Park Jin-woo

as Jung Jin Gook

as ROTC chatmate

as MC

as Self

as teenage Jang-il

as Heo Yeom (young)

as Self

as Lee

as Club man

as Self