Chief Producer
Composer
Director
Screenwriter
Main Role
- Lee Sung Kyung Main Role
- Nam Joo Hyuk Main Role
- Lee Jae Yoon Main Role
- Kyung Soo Jin Main Role
Support Role
- Cho Hye JungJung Nan Hee [Bok Joo's best friend]Support Role
- Lee Joo YoungLee Sun Ok [Bok Joo's best friend]Support Role
- Ji Il JooJo Tae Kwon [Joo Hyeong's best friend]Support Role
- Yoo Joon HongJung Woo [Bok Joo's sunbae]Support Role
- Jang Young NamChoi Sung Eun [Bok Joo's coach]Support Role
- Yoo Da InGo Ah Yeong [Jae Yi's friend]Support Role
- Jo Soo HyangSoo Bin [Shi Ho's teammate]Support Role
- Kang Ki YoungKim Dae Ho [Bok Joo's uncle]Support Role
- Moon Ji YoonSung Chul [Bok Joo's sunbae]Support Role
- Ray YangSung Yoo Hee [Shi Ho's coach]Support Role
- Oh Eui ShikBang Un Gi [Bok Ju's sunbae]Support Role
- Ahn Kil KangKim Chang Gul [Bok Joo's father]Support Role
- Choi Moo SungYoon Deok Man [Bok Joo's professor]Support Role
- Jung In Ki[Joon Hyeong's uncle]Support Role
- Lee Jung Eun[Joon Hyung's aunt]Support Role
- Park Won Sang[Joon Hyeong's therapist]Support Role
- Choi WoongKim Ki Suk [Joon Hyeong's sunbae]Support Role
- Z HeraSong Shi Yeon [Shi Ho's sister]Support Role
- Kim Chae Eun[Nurse]Support Role
- Kim Ye JunJung Joon Hyung [Young]Support Role
- Jung Eugene[Rhythmic gymnastics team]Support Role
- Jung Hyun Seok[Dormitory housemaster]Support Role
- Lee Ji Hoon[Swimming team coach]Support Role
- Lee Ye BinLee Ye BinSupport Role
- Lee Ji WooKim Bok Joo [Young]Support Role
Guest Role
- Kim Jae HyunKim Jae Hyeon [Joon Hyung's junior in swimming team]Guest Role
- Lee Jong SukJong Suk [Chicken Restaurant Customer] (Ep. 2)Guest Role
- Kim Ji Soo[Guy who works with Bok Joo] (Ep. 11)Guest Role
- Kim Woo HyeokKim Woo Hyuk [Joon Hyung's junior in swimming team]Guest Role
- Lee Jong HwaChoi Tae Hoon (Ep. 1 & 15)Guest Role
- Kim Min Ho[Weightlifter] (Ep. 2)Guest Role
- Seo HyunHwan Hee [Jae Yi's ex-girlfriend] (Ep. 12)Guest Role
- Yoon Yoo SunKim Jong Yeon [Joon Hyeong's mom]Guest Role
- Min Sung WookSang Gu [Jae Yi's sunbae] (Ep. 12)Guest Role
- Kim Seul GiSeul Gi [Delivery girl] (Ep. 15)Guest Role
- Byeon Woo SeokJoon Hyung's senior (Ep. 16)Guest Role
- Noh Woo Jin[Bok Ju's senior from Hope House]Guest Role
- Lee Soo JiGoo Seul (Ep. 1)Guest Role
- Oh Ha Nee[Rhythmic gymnast]Guest Role
- Ahn Il Kwon[Bar fight combatant] (Ep. 3)Guest Role
- Kim Ga Eul[Bok Joo's friend]Guest Role
- Seo Kwang JaeDean Kim Kyung MinGuest Role
- Tae Won Seok Guest Role
- Yoo Dam Yeon Guest Role
- Lee Ha Eun[Group date] (Ep. 9)Guest Role
- Kwon Hyuk Bum Guest Role
- Kim Gun[Joon Hyung's elementary school classmate] (Ep. 2)Guest Role
- Hwang Dong Hee[Athletic club]Guest Role
- Yoo Young Bin Guest Role
- Kim Seo Ha[Athletic Team Captain]Guest Role
- Yoon Sung Woo[Clever boy]Guest Role
- Kim Soo In[Young girl doing rhythmic gymnastics]Guest Role
- Shin Ah Young[Announcer]Guest Role
- Kim Nam WooNam WooGuest Role
- Park Kyu Yeop Guest Role
- Kim Hyun Jung[Dormitory housemother] (Ep. 3)Guest Role
- Kim Ji Eun[Dance senior]Guest Role
- Oh Jin Ha[Nurse]Guest Role
Unknown
- Dong Yoon Seok Unknown
- Park Geon Rak Unknown
- Jo Mi Nyeo Unknown
- Ok Joo Ri Unknown
- Jo Shi Nae Unknown
- Seo Wang Seok Unknown
- Lee Gyoo Jung Unknown
- Han Seo Yeon Unknown
Bit part
- Ju Seo Eun Bit part
Trending Articles
'When the Phone Rings' sparks outrage for misrepresentation of Israel-Palestine conflict
A scene from the final episode of When the Phone Rings sparks outrage among international viewers
Zhao Li Ying, Chen Zhe Yuan, Bai Lu, Dylan Wang, and more win at Weibo Awards 2024
Check out the winners of Weibo Awards 2024
Former BIGBANG's T.O.P. to address Korean media regarding his 'Squid Game Season 2' role
Former BIGBANG member T.O.P also known as Choi Seung Hyun will finally meet the Korean media to discuss his recent work, Squid Game Season 2.
Lee Chae Min is in talks to replace Park Sung Hoon in the upcoming K-drama 'The Tyrant's Chef'
Lee Chae Min may replace Park Sung Hoon in the upcoming tvN K-drama The Tyrant's Chef.
'Flourished Peony' embroiled in controversy over unauthorized use of makeup and styling concepts
Full details inside
Yang Zi's 'Flourished Peony', Bai Lu's 'Moonlight Mystique' among top airing dramas in China
Here are the top currently airing C-dramas of January 2025
ASTRO's Cha Eun Woo will reportedly star alongside Go Min Si in the Hong Sisters' new K-drama
ASTRO's Cha Eun Woo might be the leading man of Go Min Si in a new Hong Sisters K-drama.
Song Hye Kyo and Gong Yoo's K-drama has reportedly begun filming
The historical drama starring Song Hye Kyo and Gong Yoo is reportedly in the works
Seo Kang Joon and Jin Ki Joo's 'Undercover High School' gears up for release
Check out the stills from the script reading session of MBC's highly anticipated drama for the first half of the year, Undercover High School
'Undercover High School' unveils Seo Kang Joon's first look from the K-drama
MBC Friday-Saturday drama Undercover High School gives a glimpse of Seo Kang Joon going undercover as a high school student
'Bloodhounds Season 2': Netflix renews the action-thriller for a second season
Check out the full details of the Bloodhounds Season 2
Kim Min Ha has received the same casting offer as Geum Sae Rok for the upcoming K-drama 'Typhoon Bos
Kim Min Ha may be replacing Geum Sae Rok in the cast of Typhoon Boss.
'Love Scout's production team issues statement regarding the controversy surrounding director Ham
Check out the full statement of the SBS drama Love Scout's production team regarding the controversy surrounding director Ham Joon Ho
Mun Ka Young discovers Choi Hyun Wook's amusing secret in 'My Dearest Nemesis'
tvN's Monday-Tuesday drama My Dearest Nemesis is coming soon
Park Bo Young, Choi Woo Shik's Netflix K-drama 'Melo Movie' announces premiere date
The Netflix series Melo Movie is coming soon
Actor Ji Sung in talks to return to MBC K-dramas after 10 years!
Actor Ji Sung will reportedly return to MBC 10 years after Kill Me, Heal Me.
Ha Jung Woo and Krystal Jung to reportedly work together in a new thriller K-drama
Ha Jung Woo and Krystal Jung will reportedly pair up in the upcoming thriller K-drama The Landlord.
Song Hye Kyo on how she addresses rumors, hate comments; her beauty secrets, and more
Song Hye Kyo opens up about how she's changed from the past, how she addresses rumors about her and more.