Weak Hero
약한영웅
“Old Boy intensity meets a high-school survival story”
With the aid of unexpected friends, a gifted but introverted student confronts bullies and violent foes — unaware of how dangerous his world will become.
Park Ji-hoon
as Yeon Si-eun · LEAD
Park Ji-hoon
Yeon Si-eun
Choi Hyun-wook
as Ahn Su-ho · LEAD
Choi Hyun-wook
Ahn Su-ho
Hong Kyung
as Oh Beom-seok · SUPPORTING
Hong Kyung
Oh Beom-seok
Lee Yeon
as Yeong-i · SUPPORTING
Lee Yeon
Yeong-i
Kim Su-gyeom
as Jeon Yeong-bin · SUPPORTING
Kim Su-gyeom
Jeon Yeong-bin
Cha Woo-min
as Kang Woo-young · SUPPORTING
Cha Woo-min
Kang Woo-young
Shin Seung-ho
as Jeon Seok-dae · SUPPORTING
Shin Seung-ho
Jeon Seok-dae
Yoon Jung-hoon
as Lee Jeong-chan · SUPPORTING
Yoon Jung-hoon
Lee Jeong-chan
Streaming
Where to watch
Availability varies by region · Data by JustWatch via TMDB
Quick verdict
Should you watch?
A razor-sharp school-violence thriller that punches well above its weight.
✓Fans of gritty webtoon action, viewers who liked Bloodhounds or All of Us Are Dead's edge
✗Sustained, graphic bullying and fight violence are hard for you to watch
Story
What is it really about
A slight, top-ranked student weaponizes his brain — and ruthless precision — to survive a school ruled by violence. Brutal, methodical, and far darker than its classroom setting suggests.
Did you know
Trivia & facts
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FAQ