High School Return of a Gangster

High School Return of a Gangster is a 2024 South Korean web series starring Yoon Chan-young, Bong Jae-hyun and Lee Seo-jin. The series is an adaptation of a manhwa created by Horol. It aired on TVING, Wavve, Watcha, and Viu from May 29 to June 19, 2024, every Wednesday at 14:00 (KST). The first two episodes premiered at CGV Theater and were released on February 22, 2024.

Synopsis
High School Return of a Gangster tells the story of a gangster who 'wants to go to college' and possesses the body of a 19-year-old outcast high school student.

Main

 * Yoon Chan-young as Song Yi-heon/Kim Deuk-pal
 * Song Yi-heon: A 19-year-old high school student who suffered from bullying and decided to end his life. He is the illegitimate son of Chairman Bae, owner of one of the largest construction companies.
 * Kim Deuk-pal: A 47-year-old gangster of the Chilsung Gang who dreams of studying and joining high school, as he wasn't able to study due to his poor background. One day, his soul entered the body of Song Yi-heon when he tried to stop the boy from committing suicide. Unable to escape the body of the young student, he finds out that the real Song Yi-heon was severely bullied, which caused him to commit suicide. He decided to punish his bullies and help him to get into university with good grades. During the process, he befriends the school's class president and popular boy, Choi Se-kyung.


 * Bong Jae-hyun as Choi Se-kyung
 * The school's class president and a model student who is seemingly perfect in everything but harbors a secret. He later develops a special friendship with Song Yi-heon.


 * Lee Seo-jin as Kim Deuk-pal (special appearance)
 * A 47-year-old gangster whose soul entered the body of Song Yi-heon after he tried to save him. He is the respected leader of the Chilsung Gang.

People around Kim Deuk-pal

 * Won Tae-min as Kim Dong-soo
 * A member of the Chilsung Gang and the right-hand man of Deuk-pal.


 * Ko Dong-ok as Jong Cheol
 * A member of the Chilsung Gang.


 * Lee Geung-young as Seo Chil-sung
 * The founder of the Chilsung Gang and Deuk-pal's mentor.

People around Song Yi-heon

 * Hwang Bo-ra as Lee Mi-kyung
 * The secretary of Chairman Bae and the one who manages Yi-heon's household.


 * Lee Hee-jin as Song Min-seo
 * The mother of Yi-heon who raises him alone and was a former teen star.

People around Choi Se-kyung

 * Seo Tae-hwa as Choi Myung-hyun
 * The father of Se-kyung and the Chief Prosecutor.

People from high school

 * Joo Yoon-chan as Hong Jae-min
 * Classmate and the leader of the bullies who tormented Yi-heon and later became his follower and friend.


 * Lee Jeong-han as Byeong-cheol
 * Classmate and one of the bullies of Yi-heon.


 * Jung Ji-in as Kim Ye-ji
 * One of the girl students who befriended Yi-heon.