Han Kyu-sung is a man who visits the Dunguri Building to introduce Chains Bio to Kwon Se-jung (Jun Ji-hyun), who had failed her professor reappointment, just one day before his planned immigration to the United States. However, he finds himself caught up in an unexpected infection crisis. Go Soo delivers a clean and understated performance, capturing Han Kyu-sung’s kindness and sense of responsibility as he worries about his ex-wife’s future right up until the moment of his departure.
Even though their relationship has ended, Han Kyu-sung’s refusal to turn his back on Kwon Se-jung naturally reveals the friendship and loyalty remaining within him. This adds conviction to his decision to prioritize others during the disaster. His sense of justice in the face of crisis was particularly impressive. In a tense moment as a swarm of zombies approached, Han Kyu-sung didn’t hesitate to rush toward Choi Hyun-hee (Kim Shin-rok) alongside Kwon Se-jung after she collapsed.
Above all, Go Soo’s presence was so vivid that it felt like more than just a special appearance. Han Kyu-sung’s quick judgment and responsibility in the midst of crisis blended perfectly with the trustworthy image Go Soo has built over the years, making the character even more believable. Despite his short screen time, he instantly commanded the emotional tone of the film, convincingly conveying the core themes of justice, friendship, and humanity, and creating a powerful starting point for the narrative of ‘Gunche’.
Meanwhile, ‘Gunche’ has been dominating the box office since its release on the 21st, consistently holding the number one spot. Starting with the highest opening score of 2026, it has rewritten cinema history this year by achieving the highest first-weekend box office score, reaching 1 million viewers in the shortest time (4 days), and hitting 2 million viewers in just 5 days.
