High School Return of a Gangster Cast—a high-energy K-drama filled with unexpected alliances, fierce rivalries, and the story of a former gangster returning to high school life with a mission to survive and thrive.
Table of Contents
Introduction

High School: Return of a Gangster brings a fresh twist to the high school genre with a gripping storyline and a cast full of dynamic and memorable characters. The drama centers around a former gangster who finds himself back in high school, navigating the challenges of fitting into an academic world while facing old enemies and new friendships. The cast, a mix of seasoned actors and rising stars, brings depth, humor, and intensity to the story. With themes of redemption, survival, and self-discovery, the characters’ journeys offer a unique blend of suspense and heart.
High School Return of a Gangster Cast
Park Seon-ho as Kim Min-jae
Park Seon-ho plays Kim Min-jae, the lead character who returns to high school after spending years as a feared gangster. Min-jae is tough, street-smart, and holds a dark past, but his journey back to school forces him to confront a new world full of unfamiliar rules. He struggles with adapting to academic life while trying to protect his old friends and stay out of trouble. Park Seon-ho brings a perfect blend of charisma and vulnerability to Min-jae, making him both a relatable and intriguing character.
Kim Ji-in as Han So-young
Kim Ji-in portrays Han So-young, a smart and ambitious high school student who quickly becomes entangled in Min-jae’s chaotic return to school. So-young is resourceful, often stepping in to help Min-jae navigate school life, and becomes a crucial ally in his quest for redemption. With a blend of determination and empathy, Kim Ji-in’s portrayal of So-young adds emotional depth and intelligence to the series.
Lee Sang-woo as Jang Tae-hyun
He’s ruthless and calculating, pushing Min-jae into difficult situations as the two are drawn back into their dark past. Lee Sang-woo’s commanding presence and intensity make Tae-hyun a formidable and compelling rival.
Supporting Cast
1. Kim Yeon-seo as Lim Ji-woo
Kim Yeon-seo plays Lim Ji-woo, a fellow student at Min-jae’s high school. Ji-woo is an intelligent and driven student who becomes an important figure in Min-jae’s new life. Initially wary of his gangster background, she starts to see beyond his past and helps him adjust to school life, offering guidance and support. Her character is pivotal in the series, showcasing themes of second chances and personal growth.
2. Yoo Joon-sang as Principal Park
Yoo Joon-sang takes on the role of Principal Park, the strict and often stern school principal who has his reservations about Min-jae’s return to the academic world. As the story unfolds, Principal Park becomes an unexpected ally, pushing Min-jae to realize his potential beyond his violent past. His character adds an authoritative yet compassionate layer to the drama.
3. Kim So-eun as Seo Mi-ran
Kim So-eun plays Seo Mi-ran, a popular and influential student who initially sees Min-jae as a threat but later becomes a trusted friend. Mi-ran’s transition from antagonist to ally mirrors Min-jae’s own transformation, and her interactions with him highlight the importance of friendship and acceptance. Kim So-eun adds complexity to the character, making Mi-ran more than just a stereotypical high school queen bee.
Conclusion
The powerful performance of Park Seon-ho as a reformed gangster navigating teenage life sets the tone for a drama that balances action, heart, and humor. Supported by a richly layered ensemble, each character adds depth to the narrative, making this K-drama not just a tale of redemption but a dynamic exploration of identity, second chances, and the bonds we form along the way. Whether you’re in it for the thrills or the emotional arcs, the cast delivers a memorable experience from start to finish.
Pump up The Healthy Love Cast & Their Role (2025) Rom-Com
FAQs
Who plays the lead role in High School: Return of a Gangster?
Park Seon-ho stars as Kim Min-jae, the ex-gangster who returns to high school under unusual circumstances.
Has Park Seon-ho acted in other dramas before?
Yes, Park Seon-ho has appeared in dramas like Rookie Cops, Produce X 101 (as a contestant), and Joseon Survival Period. His role here marks a notable return to a more intense, character-driven story.
Who is the female lead in the series?
Kim Ji-in plays Han So-young, the bright and resourceful student who helps Min-jae navigate high school life. She’s recognized for her previous work in So Not Worth It and Extraordinary You.
Are there any idol actors in the cast?
Yes, some of the younger supporting cast members are rising actors and trainees from idol backgrounds, which adds to the show’s youthful energy and appeal.
Who plays the main antagonist?
Lee Sang-woo portrays Jang Tae-hyun, Min-jae’s rival with connections to his gangster past. His character adds much of the conflict and tension in the drama.
What kind of roles do the supporting characters play?
The supporting cast includes classmates, teachers, and former gang associates. They contribute to both the comedic and dramatic elements of the show, portraying the social dynamics of school life and the consequences of Min-jae’s past.
Is this cast well-received by fans?
Viewers also appreciate the nuanced performances from both veteran and rookie actors.
Is there real-life chemistry between the leads?
While there’s no confirmed off-screen relationship, behind-the-scenes footage shows a strong and friendly rapport between the leads, which helps their on-screen connection feel authentic.
Are there any notable cameos?
While not officially confirmed, K-dramas often feature surprise cameos. Stay tuned to future episodes or announcements for updates on special guest appearances.
How did the cast prepare for their roles?
Many of the cast members reportedly trained physically and emotionally for their roles—especially Park Seon-ho, who had to portray both a hardened gangster and a believable high school student.