Lee Chang-In

as Yoon Jae-on (4 episodes)

as Eun-ho (8 episodes)

as Nam Sang-woo (2 episodes)

as Han Yeong-Soo (10 episodes)

as Lee Kang San's friend (Teen) (1 episode)

as (waiter) (2 episodes)

as (Chae Hyun-Seung's alumni) (1 episode)

as (student) (2 episodes)