Youth of May

Lee Do-Hyun

Hwang Hee-tae (12 episodes)

Go Min-si

Kim Myeong-hee (12 episodes)

Lee Sang-Yi

Lee Soo-chan (12 episodes)

Keum Sae-Rok

Lee Soo-ryeon (12 episodes)

Oh Man Seok

Hwang Gi-nam (12 episodes)

Kim Won-hae

Kim Hyeon-cheol (12 episodes)

Uhm Hyo-seop

Lee Chang-geun (12 episodes)

Hwang young hee

Choi Soon-nyeo (12 episodes)

Sim I-yeong

Song Hae-ryeong (12 episodes)

Park Cheol-min

Choi Byeong-geol (12 episodes)

Lee Hwang-eui

Han Seok-joong (12 episodes)

Heo Jeong-do

Lee Gyeong-pil (12 episodes)

Kim Bo-jung

Kim Min-ju (12 episodes)

Jung Wook-jin

Choi Jung-haeng (12 episodes)

Rho Sang-bo

Hong Sang-pyo (12 episodes)

Kim Eun-soo

Lee Kwang-gu (12 episodes)

Lee Kyu-sung

Jung Hye-geon (12 episodes)

Lee Bo-young

Park Seon-min (12 episodes)

Kwon Young-chan

Kim Kyung-soo (12 episodes)

Park Se-hyun

Lee Jin-ah (12 episodes)

Kim Yi Kyung

Oh In-young (12 episodes)

Jang Won-hyuk

Yoo Byeong-cheol (12 episodes)

Choi Seung-Hoon

Hwang Jung-tae (12 episodes)

Jo Yi-hyun

Kim Myung-soo (12 episodes)

Choi Moon-soo

Suk-joong's Wife (12 episodes)

Kim In-sun

Jang Suk-chul (12 episodes)

Lee Bong-Joon

Student Protestor (12 episodes)

Cha Sang-mi

Maid in Hee-tae's Home (12 episodes)

Yun Seung-Hun

Paramedic (2 episodes)

Jung Hee-Tae

Kim Kyung-soo (adult) (2 episodes)

Yoo Soon-woong

Priest (2 episodes)

Jun Joon Woo

Soo-chan's employee (2 episodes)

Gu Da-song

Bo-yeon (2 episodes)

Choi Yi-sun

Soo-chan's co-worker (2 episodes)

Jo Ji-hyun

Bus station employee (1 episode)

No Kyung

Sergeant (1 episode)

Park Yong

Byun Sung-soo (1 episode)

Kwon Hyuk-hyun

Lee In-jae (1 episode)

Kwon Eun-Bin

Yu-jin (1 episode)

Lee Joong-yeol

Mr. Kim (1 episode)

Kwak Ja-Hyoung

Sang-gon (1 episode)

Bae Sung-il

Police chief (1 episode)

Oh Kyu-taek

Used car dealer (1 episode)

Lee Jae-Woo

Ki-nam's guy (1 episode)

Ahn Jong-Jin

Student (1 episode)

Kim Chul-yoon

Sang-min (1 episode)

Choi Nam-wook

Taxi driver (1 episode)

Jang Tae-min

Ambulance driver (1 episode)

Nam Do-yoon

Student (1 episode)

Gu Bon-jin

Hospital executive (1 episode)

Han Myeong-hwan

Kim Sung-wook (1 episode)

Go Geon-ryeong

Bus passenger (1 episode)

Choi Won-young

Hwang Hee-tae (adult) (1 episode)

Park Eun-young-II

Sung-wook's mother (1 episode)

Jang Do-ha

Lee Seo-on (1 episode)

Kim Ju-yeon

Nurse (1 episode)

Ha Sung-min

Sung-wook's father (1 episode)

Yoo Tae-joo

Soldier (1 episode)

Im Woo-chan

Plainclothes agent (1 episode)

Sung Ki-youn

Hwang Jung-tae (adult) (1 episode)

Hong Eun-Jeong

Jung-tae's secretary (1 episode)

Lee Sang-hwa

Violent guy in hospital (1 episode)

Sung No-jin

Kim Myung-soo (adult) (1 episode)

Koh Na-young

Restaurant owner (1 episode)

Yoon Jin-sung

Jang Suk-chul (adult) (1 episode)

Jin Yong-Ok

Hyun-chul (1 episode)

Jin-an Jeong

Bus attendant (1 episode)

Kim Hyeon

Lee siblings' aunt (1 episode)

Lee Young-jin

Doctor (1 episode)

Han Sa-myung

Won-seok (1 episode)

Kim Nam-jin

Orphanage nun (1 episode)

Park Se-jun

Music (12 episodes)

Lee Kang

Writer (12 episodes)

Song Min-yeop

Director (12 episodes)