Recap, trailer, cast details, and what to expect from Si Eun’s new journey at Eunjang High

Weak Hero Class 2 is officially dropping on Netflix on April 25, 2025, and fans are eagerly anticipating what’s next for Yeon Si Eun. After the emotional gut punch that was season 1, things ended on a dark note, but season 2 also promises a new beginning—for better or worse.

With just 8 episodes lined up, expect a fast-paced ride full of tension, action, and the moments of finding power in weakness the series is known for. Ahead of the second’s release, here’s everything—from returning cast to trailer—you need to know!

Weak Hero Class 1 recap

Weak Hero Class 1 introduced us to Si Eun (Park Ji Hoon), Su Ho (Choi Hyun Wook), and Beom Seok (Hong Kyung)—three very different students who unexpectedly teamed up against the vicious bullying culture at Byuksan High and formed a heartwarming friendship along the way. However, the trio doesn’t last long, as Beom Seok, grappling with his own insecurities, starts harbouring negative feelings against Su Ho, mistaking his carefree attitude for arrogance.

Si Eun’s strategic thinking and calm demeanour made him an unlikely ‘weak’ hero, but his fight came at a cost. By the season’s end, Su Ho was in a coma, Beom Seok had been shipped off overseas, and Si Eun was left emotionally wrecked. He chose—or was rather forced—to transfer schools, but the trauma clearly followed him, setting up a more emotionally complex story we’re about to get in season 2.

Weak Hero Class 2: Returning cast

Park Ji Hoon returns as Yeon Si Eun, our quiet, brainy protagonist who proved in season 1 that you don’t need to be the biggest guy in the room to take on bullies.

Now, after everything that went down at Byuksan High, he’s transferring to Eunjang High, a school with an even worse rep for violence. There’s a lot of speculation about whether Choi Hyun Wook might return as Su Ho since his character was left in a coma, but nothing’s confirmed yet.

It is also unclear if Hong Kyung’s character Beom Seok will return for the second installment—but fans have theories that Beom Seok never took that flight he was supposed to and is still in Korea, so there are chances of his redemption arc, since he’s a ‘weak hero’ too, after all.

Weak Hero Cass 2: New faces

Season 2 introduces a whole new set of characters at Eunjang High. We’ve got Ryeoun as Park Hu Min, Choi Min Young as Seo Jun Tae, and Lee Min-jae as Go Hyun Tak, all of whom look like they’ll be in Si Eun’s corner this time around.

But it’s not just about new friends; there are new enemies too. Lee Jun Young is stepping in as Geum Sung Jae (aka Wolf Keum), and Bae Na Ra plays Na Baek Jin. Both are part of “The Union,” a violent group that practically runs the school, so it’s clear that Si Eun isn’t getting a break any time soon.

Weak Hero Class 2 trailer

The official teaser trailer for Season 2 gave us a quick but powerful glimpse into the chaos that’s about to unfold at Eunjang High. Si Eun still looks composed on the outside, but you can tell the weight of the past he is carrying.

What to expect from Weak Hero Season 2

Weak Hero Class 2 is going deeper and darker. Si Eun is stepping into Eunjang High not just as a transfer student but as someone carrying the emotional scars of everything that happened before. The violence is more extreme, as the bullies are more powerful this time.

The creators have said this season will be more aligned with the original webtoon, so fans of the source material can expect more depth, more intensity, and more of that cold, calculating approach that made Si Run such a loved character.

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