Scripted series · wavve
Weak Hero
Stand to protect it.
Who's in it
Cast
The principal ensemble across the run of the series.
Park Ji-hoon
Yeon Si-eun
16 eps
Choi Hyun-wook
Ahn Su-ho
16 eps
Hong Kyung
Oh Beom-seok
16 eps
Ryeoun
Park Hu-min
8 eps
Lee Yeon
Yeong-i
8 eps
Choi Min-yeong
Seo Jun-tae
8 eps
Yoo Su-bin
Choi Hyo-man
9 eps
Kim Su-gyeom
Jeon Yeong-bin
8 eps
Cha Woo-min
Kang Woo-young
16 eps
Shin Seung-ho
Jeon Seok-dae
8 eps
Bae Na-ra
Na Baek-jin
8 eps
Lee Min-jae
Go Hyun-tak
8 eps
Lee Jun-young
Geum Seong-je
8 eps
Yoon Jung-hoon
Lee Jeong-chan
8 eps
Cha Se-jin
Basketball club member 3
8 eps
Hwang Sung-bin
Han Tae-hoon
8 eps
Na Chul
Kim Gil-su
8 eps
이용빈
Seung-min
8 eps
Lee Hyun-bae
Yeong-bin's Friend
1 eps
Yu Seong-yong
Baseball Player
1 eps
Oh Su Yun
Yeong-bin's Mother
1 eps
Jang Dae-woong
Kim Won-seok
2 eps
Kim Hyeok-jong
Police Officer 1
1 eps
Kim Tae-jun
Police Officer 3
1 eps
Pyeon Hae-jun
Kim Hui-jun
1 eps
Park Sang-eun
Jeong-chan's Friend
1 eps
Jang Jae-ha
Child Yeon Si-eun
1 eps
Byun Joong-hee
An Su-ho's Grandmother
1 eps
Kim Hyun
School Principal
1 eps
Lee Hae-woon
Homeroom Teacher
1 eps
Cho Jung-seok
Choi Chang-hee
4 eps
Kong Hyun-joo
Si-eun's Mother
5 eps
Jeon Su-ji
Psychiatrist
1 eps
Lee Myeong-ro
Baek Dong-ha
6 eps
Oh Gi-gwang
Do Seong-mok
6 eps
Lim Ho-jun
2-4 Homeroom Teacher
3 eps
Jang Jun-whee
2-7 Homeroom Teacher
1 eps
Jeon Bae-soo
Baku's Father
6 eps
Kang Hak-soo
Police Officer
1 eps
Son Bo-seung
Seoknam's Gorilla
3 eps
The Nutevio profile
TV DNA
How Weak Hero actually feels to watch, measured on the traits our editors track across every series.
Signature profile
Weak Hero reads strongest on Character Depth, Bingeability and Emotional Weight.
How fully written and psychologically layered the ensemble is.
How hard it is to stop after one episode.
How much the series is designed to affect you.
Visual ambition — scale, craft and set-piece filmmaking.
How much each hour depends on the one before it.
How often an episode ends on a hook you can't ignore.
The sustained pressure the series keeps you under.
The scale, internal logic and texture of the world.
How often the series is genuinely funny, by design.
The story
What it's about
With the aid of unexpected friends, a gifted but introverted student confronts bullies and violent foes — unaware of how dangerous his world will become.
The run
Seasons
2 seasons · 16 episodes.
Season 1 · Complete
Class 1
20228 episodes
8.5IMDbWith the aid of unexpected friends, a gifted but introverted student confronts bullies and violent foes — unaware of how dangerous his world will become.
Best episode · S01E05 Episode 5
Season 2 · Complete
Class 2
20258 episodes
8.8IMDbAfter losing his friend to violence, model student Yeon Si-eun vows not to repeat history at his new school in a tale of dazzling growth and desperate survival.
Best episode · S02E04 Episode 4
Where the series peaks
Best Episodes
The hours that define the show, ranked by audience response and editorial signal.
S02E04
Episode 4
After Geum Seong-je crosses the line, Si-eun strikes a deal with Na Baek-jin — leaving Park Hu-min, Hyun-tak and Jun-tae alone in the violent crosshairs.
S02E05
Episode 5
Worried for his father and backed into a corner, Hu-min confronts Baek-jin. Si-eun considers studying abroad after clashing with his distressed mother.
S02E08
Episode 8
Hu-min, Hyun-tak and Eunjang students gather to engage in a final confrontation against Baek-jin's gang. In the end, who will prevail?
S02E02
Episode 2
After being saved by Si-eun, Jun-tae attempts to befriend him — but both are soon dragged into Choi Hyo-man's revenge plot involving Go Hyun-tak.
S02E01
Episode 1
Still affected by what happened to Su-ho, Si-eun withdraws from others. Seo Jun-tae contemplates taking a stand against the bullies — despite the risks.
S01E05
Episode 5
While hanging out in a karaoke room with his friends, Bum-seok runs into the bullies from his previous school. Soo-ho makes them apologize, but Bum-seok isn't happy with Soo-ho ordering him around. Si-eun becomes more worried about Bum-seok who seems to be getting more unstable.
Recently aired
Latest Episodes
Behind the series
Created by
Showrunners, creators, executive producers and the writers who set the voice of the series.
The craft
Key Crew
Directing, writing, production, camera, music and editing.
Executive production
- Han Jun-heeExecutive Producer
- Louis KooExecutive Producer
- Peter Chan Ho-SunExecutive Producer
Writing
- Yoo Soo-minWriter
Direction
- Park Dan-heeDirector
- Yoo Soo-minDirector
Music
- PrimaryOriginal Music Composer
Where to watch
Streaming
Availability verified against regional listings.
- NetflixStreaming
- OnDemandKoreaStreaming
- Netflix Standard with AdsStreaming
- Kocowa Amazon ChannelStreaming
- KocowaStreaming
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Never stop watching
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