The actor admitted he was worried about trying out the new genre, explaining, "You know, you can't help but compare it to foreign films. The audience probably has a set image of a zombie movie, so I was worried that 'Train to Busan' will not be able to live up to their satisfaction. But it was a worthless worry after all."
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When asked, "Would you like to join 'Train to Busan 2' if there is one?", Choi Woo Shik humorously answered, "Of course, but I am already infected so I'm not sure if I can make an appearance."