Weak Hero Class 1: Cast, Plot, Class 2 - Netflix Tudum

  • Deep Dive

    The Bullies Get Their Dues in Weak Hero Class 1

    The action-packed K-drama stars actor and singer Park Ji-hoon.

    By Ingrid Ostby
    April 25, 2025

A quiet mathlete with a temper bands together with an ass-kicking slacker and the timid new guy in town to defeat their many school bullies. Weak Hero Class 1, based on a webtoon, stars Park Ji-hoon, Choi Hyun-wook, and Hong Kyung. The K-drama, created by You Su-min and Han Jun-hee (Coin Locker Girl), was directed by You and Park Dan-hee (Blue Birthday). 

Popular Now

  • Here Are the 10 Most-Watched Movies of 2026 — So Far
    Three people: a soldier in camouflage outdoors, a woman in white business attire and sunglasses in a modern building, and a man in dark clothes in an indoor setting, each in a separate vertical panel.

Where is Weak Hero Class 1 streaming?

Stream it on Netflix now.

Park Ji-hoon as Si-eun wears a school uniform while staring at a fellow student in an image from ‘Weak Hero Class 1.’

Who’s in the cast of Weak Hero Class 1?

  • Park Ji-hoon (At a Distance, Spring Is Green) as Yeon Si-eun
  • Choi Hyun-wook (Twenty Five Twenty One) as Ahn Su-ho
  • Hong Kyung (D.P.) as Oh Beom-seok
  • Kim Su-gyeom (Duty After School) as Jeon Yeong-bin, a bully
  • Shin Seung-ho (Alchemy of Souls) as Jeon Seok-dae, a drug dealer
  • Kim Sung-kyun (Karma) as Si-eun’s father
  • Kong Hyun-joo (High Class) as Si-eun’s mother
  • Hwang Sung-bin (D.P.) as Han Tae-hun, Yeong-bin’s friend
  • Lee Yeon (Kill Boksoon) as Young Yi
  • Yoon Jung-Hoon (Kiss Sixth Sense) as Lee Jeong-chan, Yeong-bin’s friend
Kong Hyun-joo sits at a table at a restaurant wearing a black shirt while holding a glass of water in an image from ‘Weak Hero Class 1.’

What happens in Weak Hero Class 1?

Si-eun, a star student at Byuksan High School, is a constant target for bullies — and his refusal to bow to their demands incites their deepest ire. But when Si-eun meets slacker Su-ho and transfer student Beom-seok, the trio combine forces to fight back. 

Is Weak Hero Class 1 based on a book?

Yes, it’s based on the webtoon Weak Hero by Seopass and Razen, aka Kim Jin-seok. 

Shin Seung-ho holds his fists up across from a person doing the same in an image from ‘Weak Hero: Class 1.’

Where does Weak Hero Class 1 take place?

The series takes place somewhere in South Korea, at the fictional Byuksan High School. 

Will there be a Weak Hero Class 2?

Yep. The second installment is on its way and will premiere on Netflix. Stay tuned for more updates. 

Kick-Ass K-Dramas To Stream NowFrom Squid Game to Money Heist: Korea – Joint Economic Area, these Korean series are packed with drama.
Related Tags
  • Action
  • International
  • Based on a Book
  • Deep Dive
  • Article

Shop Weak Hero

Go to Netflix Shop

Deep Dive

  • Who Does Sarah Paulson Play in Monster: The Lizzie Borden Story?
    The Ryan Murphy regular returns to his universe.
  • The series co-stars Toni Collette, Sarah Gadon, and more.
  • Get ready to get real with the social media phenom and her family.
  • Find out everything you need to know about the new season. 
  • A woman meets a man online who she later discovers is a serial killer. 
  • The series features recordings of the killer that’ve never been heard before.
  • The K-drama from My Demon director Kim Jang-han stars Jung Hae-in and Ha Young.
  • Maite Alberdi’s new documentary examines the crushing weight of expectations and the elusive nature of truth.

Action

  • Climb aboard the two-part visual spectacle arriving this fall. 
  • Who gets the Blue Crown? Do the Pogues avenge JJ’s death?
  • Stream the Creed films, Anatomy of a Fall, Girlfriends, and more before the month ends.
  • From South Carolina to Morocco, here are the best spots to hunt for treasure.
  • These series are hits with audiences worldwide.

Popular Now

  • Go under the surface to answer your deepest questions about the sci-fi thriller.