Nothing has been officially decided yet, but it does look like the rumors were not completely unfounded. Song Il Kook will be making a tough decision soon, whether to stay on the KBS variety show 'Superman Is Back' with his triplets, or take on the lead role on KBS' upcoming historical drama 'Jang Yeong Sil'.

Song Il Kook's company's representative told Yonhap News on July 16, "He will decide within this month. There is nothing that has been decided as of yet. He will decide in a little while."

With growing questions about whether the actor and his triplets will be leaving, the producer of 'Superman Is Back' stated, "We haven't heard anything from Song Il Kook's side, and we have never had a discussion about this topic either. There's no reason for us to bring up leaving [the show] in this situation. So as of now, we are planning to continue with his appearance on the show."

It's been four years since Song Il Kook was in a drama, and 'Jang Yeong Sil' is set to air starting from September to the end of this year. 

Actors typically leave the variety show they're on or the music show they're hosting once they join a drama or film production, since acting is their main occupation. But this case is a little different, since Song Il Kook and his triplets are one of the most popular variety shows ever at the moment.

But isn't it possible for Song Il Kook to stay on the show 'Superman Is Back' and still film this drama? Some people are stating that since both are KBS shows, it could be possible for the broadcast station to slightly change scheduling and other details for him.

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However, it is ultimately up to the actor to decide what is best for him and his family, so we'll have to stay tuned to find out what he ultimately decides on!