Lee Sung-yeol

as Hwang Sung-yeol

as Yoon Joon [Young]

as Sang-yeob

as Self

as Ahn Dae Gil

as Shim Hyung-woo

as Self

as student council president

as Self

as Choi Hyung-cheol

as Jung Woo-jin

as Self

as Hong Seok Pyo

as Gi Yeok

as Self

as Self

as Self

as Self (INFINITE)