Study Group (Korean: 스터디그룹) is a South Korean television series co-written by Eom Seon-ho and Oh Bo-hyun, directed by Lee Jang-hoon and Yoo Beom-sang, and starring Hwang Min-hyun, Han Ji-eun, Cha Woo-min, Lee Jong-hyun, Shin Su-hyun, Yoon Sang-jeong, and Gong Do-yu. Based on the webtoon of the same name by Shin Hyung-wook, it is about a boy who wants to study hard to achieve his one goal. It premiered on TVING on January 23, 2025.
In August 2025, it was renewed for a second season.
Contents
Synopsis
Study Group tells the story of Yoon Ga-min, who is only talented in fighting, trying to study hard to achieve his goal of entering university by forming a study group in the notorious Yusung Technical High School.
Cast and characters
Main
Hwang Min-hyun as Yoon Ga-min
Choi Seung-hoon as teen Ga-min
Jang Sun-yool as young Ga-min
A first year student at Yusung Technical High School who is excellent at fighting, and has a passion for studying but frequently returns with bad grades. He forms a study group in the school with the target of entering university.
Han Ji-eun as Lee Han-kyung
A temporary teacher at Yusung Technical High School, and is the sturdy backing of the study group.
Cha Woo-min as Pi Han-wool
A model second year student at Yusung Technical High School.
Lee Jong-hyun as Kim Se-hyun
Shin Seo-woo as young Se-hyun
Ga-min's classmate who forms a study group together with him.
Shin Su-hyun as Lee Ji-woo
Lee Nam-gyeong as young Ji-woo
A first year student at Yusung Technical High School, and is Hyun-woo's twin elder sister. She is part of the study group.
Yoon Sang-jeong as Choi Hee-won
Ji-woo's best friend who joins the study group.
Gong Do-yu as Lee Jun
Song Seung-hwan as teen Jun
Kang Ji-yong as young Jun
Supporting
Hong Min-gi as Park Geon-yeop
Oh Han-kyul as young Geon-yeop
A first year student at Yusung Technical High School, who struggles to find the murderer of his mother.
Baek Seo-hoo as Ma Min-hwan
A second year student at Yusung Technical High School, and the closest associate of Han-wool. He is part of the Yeonbaek Gang Quartet.
Park Yoon-ho as Lee Hyun-woo
Jo Yi-hyun as young Hyun-woo
A first year student at Yusung Technical High School, Ga-min's classmate and Ji-woo's twin younger brother.
Lee Kwang-hee as Jung Do-hoon
A first year student at Yusung Technical High School, and Geon-yeop's associate.
Joo Yeon-woo as Kim Sun-chul
A third year student at Yusung Technical High School, and the leader of the Yeonseo Three Chuls, who serve as the top bodyguards of Han-wool. He has a desire for studying, but went on the wrong path due to circumstances.
Kwon Hyung-seok as Lee Dae-chul
A third year student at Yusung Technical High School, and one of the Yeonseo Three Chuls.
Han Jung-hun as Park Min-chul
A third year student at Yusung Technical High School, and one of the Yeonseo Three Chuls.
Special appearances
Kim Young-ah as Jeon Mi-hyeon
Ga-min's mother and the director of the Taekwondo Association.
Kim Young-woong as Se-hyun's father
Lee Jong-hyuk as Pi Yeon-baek
Han-wool's father who is the boss of the Yeonbaek Gang.
Jung Jae-sung as the vice principal of Yusung Technical High School
Kim Min as Oh Jang-ho
The scout in-charge for Yeonbaek Gang.
Kim Jung-young as Oh Jung-hwa
Former teacher of Yusung Technical High School, and Geon-yeop's mother.
Jeon Moo-song as Sun-chul's grandfather
Yoo In-soo as Choo Jae-hwang
A second year student at Yusung Technical High School, and a part of the Yeonbaek Gang Quartet.
Park Min as Bang Sang-in
A second year student at Yusung Technical High School, and a part of the Yeonbaek Gang Quartet.
Production
Development
Study Group is co-directed by Lee Jang-hoon and Yoo Beom-sang, and written by Eom Seon-ho and Oh Bo-hyun. It is planned by Studio Dragon and produced by Ylab Plex. The series is based on the popular Webtoon of the same name written by Shin Hyung-wook.
On May 12, 2025, a representative from Studio Dragon confirmed to media outlets that the second season was already in the early stages of planning.
Casting
On August 10, 2023 Hwang Min-hyun was reportedly cast as stated by his agency, Pledis Entertainment. On September 20, TVING revealed the main cast which included Hwang Min-hyun, Han Ji-eun, Cha Woo-min, Lee Jong-hyun, Shin Su-hyun, Yoon Sang-jeong and Gong Do-yu.
In January 2026, Hwang Min-hyun was confirmed to return for season 2. Shin Su-hyun, Yoon Sang-jeong and Gong Do-yu would also return for season 2.
In addition, Jeon So-young, Kim Su-gyeom and Kwon Sang-woo were reported to join season 2.
On July 14, 2026, it was confirmed that Yoon Hyun-suk, formerly of boy group CIX, was confirmed to join season 2, and that filming is currently in progress.
Original soundtrack
Release
Study Group was confirmed to premiere on TVING on January 23, 2025, with two episodes released every Thursday for five weeks.
