Park Seok-Cheol (Lee Dong-Wook), the eldest grandson of a notorious three-generation crime family, stands apart from his ruthless lineage. Despite his background, he remains innocent at heart, cherishing a pure and unwavering love for Kang Mi-Young (Lee Sung-Kyung) — his first love, a young woman with dreams of becoming a singer.
K Profile
Other Name: The Nice Guy, Chaghan Sanai , Chakhan Sanai , Kind Gentleman , The Good Man
Native Title: 착한 사나이
Also Known As: The Good Man
Director: Song Hae Sung
Genres: Action, Romance, Family, Melodrama
Country: South Korea
Type: Drama
Episodes: 14
Aired: July 18 – August 29, 2025
Aired On: Friday
Original Network: JTBC
Duration: Friday 20:50
The Nice Guy 2025 KDrama Cast
The Nice Guy In Good Boy 2025
Lee Dong Wook as Park Seok Cheol | (Main Role)
Lee Sung Kyung as Kang Mi Yeong | (Main Role)
Park Hoon as Kang Tae Hun | (Main Role)
Ryu Hye Young as Park Seok Hui | (Main Role)
Oh Na Ra as Park Seok Gyeong | (Main Role)
Support Role In The Nice Guy 2025
Cheon Ho Jin as Park Sil Gon [Seok Cheol’s father] | (Support Role)
Park Myung Shin as Cho Mak Sun [Seok Cheol’s mother] | (Support Role)
Choi E Jun as Hyeong Geun [Seok Gyeong’s son] | (Support Role)
Park Mi Hyun as Yun Hye Suk [Mi Yeong’s mother] | (Support Role)
Kim Do Yoon as Yun Byeong Su [Detective] | (Support Role)
Moon Tae Yu as Jang Gi Hong [Seok Cheol’s high school classmate] | (Support Role)
Park Sung Yun as Ko Jeong Nim [Seok Gyeong’s friend] | (Support Role)
Lee Moon Shik as Kim Chang Su [Gangster Leader] | (Support Role)
Han Jae Young as O Sang Yeol [Chang Su’s subordinate] | (Support Role)
Park Doo Shik as Son Heung Man [Gangster] | (Support Role)
Cha Shi Won as Lee Du Sik [Gangster] | (Support Role)
O Seung Baek as U Seok [School Bully] | (Support Role)
Kang Bin as Im Bok Cheon [Tae Hun’s subordinate] | (Support Role)
Han Min as Cheon Ho [Tae Hun’s driver and bodyguard] | (Support Role)
Yoo Seung Mok as “Long Stick” [Sil Gon’s junior] | (Support Role)
Park Won Sang as Kim Jin Ho | (Support Role)
Lee Jung Hyun as Yeon Gi | (Support Role)
Guest Role In The Nice Guy 2025
Kim Seon Gyeong as [Poetry student] | (Guest Role, Ep. 1)
Kim Min Che as [Poetry student] | (Guest Role, Ep. 1)
Heo Seon Haeng as [Poetry student] | (Guest Role, Ep. 1)
Jang Joon Hyun as [Music producer] | (Guest Role, Ep. 1)
Jo Young Mi as [Nursing home caregiver] | (Guest Role, Ep. 1)
Jang Joon Ho as Gi Su [Banker] | (Guest Role, Ep. 2)
Jung Eun Ran as [Janitress] | (Guest Role, Ep. 2)
Kim Jae Ho as [Police officer] | (Guest Role, Ep. 2)
Kwak Soo Jung as [Restaurant owner] | (Guest Role, Ep. 2)
Kwak Jin as [Tae Hun’s associate] | (Guest Role, Ep. 2)
Lee Yoo Jung as [Hospital director’s wife] | (Guest Role, Ep. 2)
Kim Gyeong Min as [Seok Gyeong’s ex-husband] | (Guest Role, Ep. 2)
Shin Jun Chul as [Audition judge] | (Guest Role, Ep. 3)
Kwon Jae Hwan as Mr. Hwang | (Guest Role, Ep. 3–4)
Kang Gu Ha as [Detective] | (Guest Role, Ep. 3–4)
Uhm Tae Ok as [Mr. Hwang’s boss] | (Guest Role, Ep. 3–4)
Jwa Chae Won as [Bully student] | (Guest Role, Ep. 4–5)
Park Joo Young as [Banker] | (Guest Role, Ep. 5)
Lee Yeon Joo as [Nursing program host] | (Guest Role, Ep. 5)
Im Sung Kyun as Jang Hak | (Guest Role, Ep. 5–6)
Kwak Ji Yoo as [Nurse] | (Guest Role, Ep. 6)
Park Geon Rak as [Usher] | (Guest Role, Ep. 6)
Lee Do Goon as [Loan shark] | (Guest Role, Ep. 6)
Ha Seung Yeon as [Music executive] | (Guest Role, Ep. 6–7)
Song Hoon as [CEO] | (Guest Role, Ep. 7)
Cha Young Mi as [Cafe employee] | (Guest Role, Ep. 8)
Hwang Dae Ki as Nupchi | (Guest Role)
Park No Kyeong as Yun Il Jung | (Guest Role)
Son In Yong as Captain Jang | (Guest Role)
Park Young Bin as Yoo Jae Bong | (Guest Role)
Park Seo Kyung as Kang Mi Yeong [Young] | (Guest Role)
Lee Seung Heon as Park Seok Cheol [Young] | (Guest Role)
Baek Hyeon Ju as [Gambling den boss] | (Guest Role)