Park In-hwan (actor)

Father Yang

Lee Man-deuk

Lee Kyeong-cheol Ji Seung-hyun as young Lee Kyeong-cheol

Gong Young-soo

Shim Deok-chul

Chang-suk, Bu-jeong's father.

Is Boo Young-bae, an 80-year-old widower who is the father of four neglectful sons, and the owner of a North Korean-style noodle house.

Kan Bo-koo (70 years old)

Byun Gook-jin

Kim Noh-gap

Landlord grandpa (Ep. 6)

Park Yi-moon

Jang Pan-ro

Byun Choon-nam

Eun Ki-hwan

Kim Soon-kyung (김순경) (father)

Jang Il-nam (In Ho, Shin-ho & Jin-ho's father)

Lee Hwa-sang (Ki-jeok's father)

Lee Soo-gil

Hwang Man-bok, Dong-gyu's grandfather

Seo In-chul

Yeon Gaesomun's father

Reverend Yoon Mok-sa, Mi-ju's father

Hwang Gap-soo (Homeroom teacher)

Cha Du-yong, Eun-suk's father

Jeong Seung-hwa

Noh So-jang

Eun-soo's father

Lee Jin-pyeong

Pool technician

Hong Deuk-joo

Soo-ha's father

Mr. Kang (father)