맨홀

김재중

Bong Pil

유이

Kang Soo Jin

차선우

Jo Seok Tae

정혜성

Oh Jin Suk

주진모

Bong Pil's father

김혜옥

Bong Pil's mother

서현철

Soo Jin's father

이연경

Soo Jin's mother

강홍석

Bong Pil's friend

Seo Min-ji

Bong Pil's friend

Jang Mi-kwan

Kang Jae Hyun [Soo Jin's fiance]

Lee Sang-yi

Oh Dal-Soo