Weak Hero plot: what the series is about
Yeon Si-eun is the kind of student teachers love and classmates barely notice. He keeps to himself, studies hard and seems to want nothing more than to be left alone. His high school is not a quiet place, though. Bullying, gang-style hierarchies and casual violence shape everyday life, and keeping your head down is no guarantee of safety.
When trouble finally comes for Si-eun, he does not answer with size or muscle. He relies on what he already has: a sharp, calculating mind and a talent for reading people and situations. Along the way he crosses paths with classmates such as Ahn Su-ho and Oh Beom-seok, and his solitary routine starts to give way to something closer to friendship.
At its core, Weak Hero is a story about young people pushed into corners, the loyalty that grows between them, and how fast schoolyard conflict can turn dangerous. The tagline, “Stand to protect it,” sums up the emotional pull of the series. It mixes tense, grounded fight scenes with a character-driven look at youth, pressure and the bonds formed under it.
What makes Weak Hero notable: cast, creators and format
- Cast: Park Ji-hoon leads as Yeon Si-eun. He is joined by Choi Hyun-wook as Ahn Su-ho, Hong Kyung as Oh Beom-seok and Cha Woo-min as Kang Woo-young. The supporting cast includes Yoo Su-bin (Choi Hyo-man), Ryeoun (Park Hu-min), Lee Yeon (Yeong-i), Choi Min-yeong (Seo Jun-tae), Kim Su-gyeom (Jeon Yeong-bin) and Shin Seung-ho (Jeon Seok-dae).
- Creators: The series was created by Yoo Soo-min and Han Jun-hee. Yoo Soo-min also wrote it, and Park Dan-hee and Yoo Soo-min directed.
- Source material: Weak Hero is based on a webtoon.
- Networks: It is a South Korean production in Korean (original title: 약한영웅), released on wavve and Netflix.
- Format: There are 2 seasons with 8 episodes each, for 16 episodes in total. The listed episode runtime is 84 minutes. Season 1 premiered on November 18, 2022, and Season 2 premiered on April 25, 2025. The series has ended.
- Genre: Action & adventure and drama, with themes of school bullying, gangs, male friendship and bromance.
- Rating in the Philippines: SPG.
Who will enjoy Weak Hero
- Viewers who like gritty high school dramas that take bullying and violence seriously
- Fans of grounded action with a smart, unconventional protagonist
- Anyone drawn to stories about male friendship, loyalty and bromance
- Webtoon readers curious to see a webtoon story adapted for live action
- Followers of Park Ji-hoon, Choi Hyun-wook or Hong Kyung
Where to watch Weak Hero in the Philippines
In the Philippines, Weak Hero is listed on Netflix, which requires a subscription. A separate Philippine-specific release date is not yet listed. The original premiere dates are November 18, 2022 for Season 1 and April 25, 2025 for Season 2. The series carries an SPG rating in the Philippines, so parental guidance is advised for younger viewers given its themes of bullying and violence. Watching through the official platform supports the creators and gives you proper subtitles and video quality.
Trailer
Cast
Park Ji-hoonas Yeon Si-eun16 episodes
Choi Hyun-wookas Ahn Su-ho16 episodes
Hong Kyungas Oh Beom-seok16 episodes
Cha Woo-minas Kang Woo-young16 episodesSee credits →
Yoo Su-binas Choi Hyo-man9 episodesSee credits →
Ryeounas Park Hu-min8 episodes
Lee Yeonas Yeong-i8 episodesSee credits →
Choi Min-yeongas Seo Jun-tae8 episodes
Photo: TMDB
Episode guide
| Season | Episode | Original air date | |
|---|---|---|---|
| 1 | 1 | Aired | |
| 1 | 2 | Aired | |
| 1 | 3 | Aired | |
| 1 | 4 | Aired | |
| 1 | 5 | Aired | |
| 1 | 6 | Aired | |
| 1 | 7 | Aired | |
| 1 | 8 | Aired | |
| 2 | 1 | Aired | |
| 2 | 2 | Aired | |
| 2 | 3 | Aired | |
| 2 | 4 | Aired | |
| 2 | 5 | Aired | |
| 2 | 6 | Aired | |
| 2 | 7 | Aired | |
| 2 | 8 | Aired |
Dates are original broadcast dates in the country of origin (Korea/China). Official streaming platforms in your country may add episodes the same day or later.
FAQ
- How many episodes does Weak Hero have?
- Weak Hero has 16 episodes across 2 seasons, with 8 episodes in each season. The series has ended.
- Where can I watch Weak Hero in the Philippines?
- Weak Hero is listed on Netflix in the Philippines, which is a subscription service.
- When was Weak Hero released?
- Season 1 premiered on November 18, 2022, and Season 2 premiered on April 25, 2025. A separate Philippine-specific release date is not yet listed.
- Who is in the cast of Weak Hero?
- Park Ji-hoon stars as Yeon Si-eun, alongside Choi Hyun-wook as Ahn Su-ho, Hong Kyung as Oh Beom-seok and Cha Woo-min as Kang Woo-young.
- What genre is Weak Hero, and is it based on a webtoon?
- Weak Hero is a Korean action and drama series about school bullying and friendship. It is based on a webtoon.
When Destiny Brings the Demon
When Life Gives You Tangerines
Where the Mask Ends
100 Days of Deception
A Love Other Than Yours
A Shop for Killers