Seo In Guk is known for his role in the drama "Reply 1997", and he talks about his character Yoon Yoon Jae being the mysterious husband at the end of the drama.
In an interview with Expo News, Seo In Guk revealed that he didn't know who the husband was until the filming of the 16th episode. He shared, "I really didn't know. Director Shin Won Ho didn't tell us who the husband was even after giving the script for the 15th episode. I feel that he thinks we would try to act it out unconsciously if we found out."
He added, "Everyone kept asking him who the husband was but he just told us to wait for the script even after asking for the reasons why we shouldn't know. We couldn't figure out who the husband was because all the male leads were asked to shoot the same scene."
When asked if he was willing to make a cameo for the second season "Reply 1994", he said, "I think it would be fun and I'd do it if the director asks. If I make a cameo, Yoon Jae would be in middle school, but I can't go with the hair I had back then.
Seo In Guk is currently promoting his movie "No Breathing" and preparing for his first major concert.