Series

Weak Hero

Stand to protect it.

8.720222 Seasons16 Episodes

With the aid of unexpected friends, a gifted but introverted student confronts bullies and violent foes — unaware of how dangerous his world will become.

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Trailer

Episodes

8 episodes

1
1. Episode 1
44m
Si-eun is a model student who is always at the top of his school. Because he only cares about his studies, he has no friends at school. Young-bin, a boy in Si-eun's class, is annoyed by Si-eun's cynical attitude. On a mock test day, Young-bin decides to use Bum-seok, a new student, to mess with Si-eun's test.
2
2. Episode 2
43m
Young-bin wants revenge on Si-eun for putting him in the hospital by hiring a couple of thugs he knows. Meanwhile, Si-eun gets closer to Soo-ho and becomes friends. Later, Soo-ho comes to Si-eun's rescue when he gets confronted by Young-bin and his thugs.
3
3. Episode 3
41m
When Gil-su sees his boys beaten up to a pulp, he gets furious and asks who did it. Young-bin lures Si-eun, Bum-seok, and Soo-ho and takes them to Gil-su. Gil-su threatens them to bring him 15 million won in three days. Si-eun asks Young for advice and information on Gil-su.
4
4. Episode 4
38m
Si-eun sees Soo-ho's blood on the floor and calls Young-yi for help. Gil-su tells Seok-dae to come, so Young-yi follows him with her GPS tracking app on. Meanwhile, Soo-ho and Bum-seok are tied up by Gil-su's gang.
5
5. Episode 5
39m
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.
6
6. Episode 6
41m
Bum-seok befriends with Jeong-chan and Tae-hoon, he reeks of alcohol every day. Si-eun thinks Bum-seok is being used by Jeong-chan and Tae-hoon. He also thinks Bum-seok is behaving that way because he is lonely. Si-eun wants to help Bum-seok, but Soo-ho thinks he's done enough. Meanwhile, Bum-seok pays Woo-young to beat Soo-ho on his birthday.
7
7. Episode 7
37m
Si-eun gets beaten up by the guys Bum-seok paid to beat up Soo-ho. Si-eun gets seriously injured, but he doesn't tell Soo-ho about it to protect Bum-seok. Soo-ho finds out later and decides to confront Bum-seok. Bum-seok pays Woo-young again to beat up Soo-ho.
8
8. Episode 8
43m
Si-eun and Young-yi get anxious as they can't get hold of Soo-ho for too long. After Si-eun finishes his exams, he hears the shocking news. Meanwhile, Bum-seok's dad tries to make Bum-seok go study abroad.

Trailer

Official trailer

Cast

Park Ji-hoon
Yeon Si-eun
Choi Hyun-wook
Ahn Su-ho
Hong Kyung
Oh Beom-seok
Ryeoun
Park Hu-min
Choi Min-yeong
Seo Jun-tae
Yoo Su-bin
Choi Hyo-man
Cha Woo-min
Kang Woo-young
Bae Na-ra
Na Baek-jin
Lee Min-jae
Go Hyun-tak
Lee Jun-young
Geum Seong-je
Cha Se-jin
Basketball club member 3

Reviews

T
terrapong
Jan 8, 2023
3
An entire TV show about school bullying. Performances are ok, but there is very little to recommend here as it's been done a thousand times before.Read more
An entire TV show about school bullying. Performances are ok, but there is very little to recommend here as it's been done a thousand times before.
Dean
Apr 18, 2025
10
What a masterpiece. Weak Hero is a rare 10/10 where not a single second is wasted. Unlike cringe high school romances, this is a raw, brutal look at the cycle of violence, friendship, and the sting of betrayal. Park Ji-hoon’s performance is chilling—seeing a 'weak' student use his brain and surroundings to dismantle bullies is incredibly satisfying. It’s fast-paced, emotionally heavy, and absolutely essential viewing. You must be a very heartless and boring person to not be moved by this story. Beyond the acting, this show proves why Korean media is lightyears ahead of the West right now. While Hollywood is busy ruining every franchise with forced diversity, 'box-ticking' agendas, and corporate crap that kills the soul of the story, Korea focuses on what actually matters: the plot and the characters. They don’t lecture you or try to be 'inclusive' just for the sake of a trend; they just tell a damn good, gritty story. It’s a complete, tight arc that doesn't drag on for 50 seasons of filler. If you want real quality without the Western 'identity' garbage, this is the gold standard."Read more
What a masterpiece. Weak Hero is a rare 10/10 where not a single second is wasted. Unlike cringe high school romances, this is a raw, brutal look at the cycle of violence, friendship, and the sting of betrayal. Park Ji-hoon’s performance is chilling—seeing a 'weak' student use his brain and surroundings to dismantle bullies is incredibly satisfying. It’s fast-paced, emotionally heavy, and absolutely essential viewing. You must be a very heartless and boring person to not be moved by this story. Beyond the acting, this show proves why Korean media is lightyears ahead of the West right now. While Hollywood is busy ruining every franchise with forced diversity, 'box-ticking' agendas, and corporate crap that kills the soul of the story, Korea focuses on what actually matters: the plot and the characters. They don’t lecture you or try to be 'inclusive' just for the sake of a trend; they just tell a damn good, gritty story. It’s a complete, tight arc that doesn't drag on for 50 seasons of filler. If you want real quality without the Western 'identity' garbage, this is the gold standard."