Weak Hero Class 1 Direct

Su-ho is the quintessential "fighter with a golden heart." He is a semi-delinquent who has been suspended multiple times, but he lives by a strict moral code: never hit someone weaker than you. Su-ho acts as Si-eun’s shield. Choi Hyun-wook brings a chaotic energy to the role, balancing the show’s darkness with moments of fiery loyalty and surprising warmth. His friendship with Si-eun is the emotional anchor of Weak Hero Class 1.

At its core, Weak Hero Class 1 is a story about survival. The series follows Yeon Si-eun, a top-ranked, introverted student who transfers to Byeoksan High School. Unlike traditional action heroes, Si-eun is physically frail—he is skinny, looks malnourished, and would lose a fistfight against almost anyone. Weak Hero Class 1

However, Si-eun has two superpowers: a genius-level IQ and a complete inability to tolerate injustice. When the school’s bullies target him and his new friends, Si-eun stops using words. Instead, he uses physics. Su-ho is the quintessential "fighter with a golden heart

The show is only eight episodes long, but the pacing is merciless. It compresses the first major arc of the webtoon into a tight, anxiety-inducing thriller that feels less like a high school drama and more like a survival horror film. His friendship with Si-eun is the emotional anchor

The story centers on Gray Yeon (Webtoon) / Si-eun Park (Drama). He is a scrawny, unassuming student with below-average physical strength. However, he possesses a terrifyingly high IQ and analytical mind.

When targeted by bullies, Gray doesn't cower. He analyzes his opponents' psychology, utilizes his environment, and employs "tools" (from pens to steaming hot ramen cups) to level the playing field. The tagline says it all: "He is not a hero. He is a weapon."