Seo In Guk has promised a duet performance with actor So Ji Sub if their upcoming drama “Master’s Sun” receives over a 25% viewer ratings, according to Star News.

At a press conference for upcoming SBS drama “Master’s Sun” on July 30, Seo In Guk replied to reporters, “If I sing, So Ji Sub will be rapping with me and we’ll deliver a great performance.”

So Ji Sub laughed as he added, “And if that happens, Gong Hyo Jin and Kim Yuri will act in the music video to our song.”

Seo In Guk also mentioned, “While working with Lee Jong Suk for the upcoming movie ‘No Breathing,’ he told me that he thinks our drama will do really well, especially after ‘I Can Hear Your Voice.’ It’s confirmed that ‘Master’s Sun’ will be a hit.”

Seo In Guk plays the role of Kang Woo, a member of a shopping mall security team in “Master’s Sun.”

You want to see Seo In Guk and So Ji Sub in a duet performance? Spread the word of “Master’s Sun” so the ratings will skyrocket!