
ONE: High School Heroes
Synopsis
A former model student, pushed by domestic abuse and bullying, joins a group that stands up to school violence and defends its victims.
Episodes

Episode 1
Episode 1
“How are you going to fight tomorrow? It starts tomorrow." After losing the cassette, Ui-Gyeom meets Yoon-Ki and their normal life is shaken up.
2025-05-30 · 51 min
Episode 2
Episode 2
“Fighting is a talent, after all.” After a fight with Seung-joon, he encounters an unexpected accident.
2025-05-30 · 46 min
Episode 3
Episode 3
“I don't want to give in, not to them...” The resolve to fight back. Despair, visions, and an unexpected hand lead him on.
2025-05-30 · 47 min
Episode 4
Episode 4
“The problem is there are too many bad guys in the world." Anger with nowhere to go and shaky justice. Yun and Yi decide to “revolutionize.
2025-05-30 · 41 min
Episode 5
Episode 5
2025-06-06 · 46 min
Episode 6
Episode 6
2025-06-06 · 47 min
Episode 7
Episode 7
2025-06-13 · 48 min
Episode 8
Episode 8
2025-06-13 · 49 min[01]
Cast
Lee Jung-haKim Eui-gyeom
Kim Do-wanKang Yoon-ki
Kim Sang-hoKim Seok-tae
Kim Joo-ryoungMyeong Da-bin
Shin Jun-seopNam Seung-Sik
Lee Chan-hyeongSung-Wook
Shin Jae-whiLee Ki-Yoon
Lim Sung-kyunKim Seung-joon
Yuk Jun-seoLee Geol-jae
Yoo Hee-jeChoi Ki-soo[01]
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