One of the most popular concepts often used in K-dramas is the time slip. Though it was used numerous times throughout Hallyu such as in "Rooftop Prince," "Nine: Nine Time Travels," "God's Gift - 14 Days," "Time Slip Dr. Jin," and the phenomenal "My Love From Another Star," it seems it really took off over the past couple of years.

Since 2015, there have been plenty of popular time slip K-dramas that aired included the phenomenal "Goblin" and most recently "Tunnel." Now the next hyped time slip K-drama now has its main cast: Kim Jaejoong and Uee.

KBS reveals the K-pop idol actors to be the main leads

The Korean Broadcasting System (KBS) confirmed that Kim Jaejoong and Uee have both been cast as the leads in their upcoming K-drama. The tentative or working title is "Manhole" and it is a comedy about a man who goes back in time to stop a marriage from happening in the present.

Kim Jaejoong will play Bong Pil, student studying for the civil servant exam for three years. He is taking his time with the test and doesn't feel the need to "grow up" thus making him the token unemployed person in the neighborhood.

This in turn makes him the "disgrace" of his family as he depends heavily on his father who is a postmaster. Uee will play Kang Su Jin, someone who knows Bong Pil but has built a wall between herself and him. The closer she gets to getting married, the more unsure she feels as she see's Pil's love for her differently.

"Manhole" a recipe for success with seasoned K-pop idol actors and popular K-drama concept?

It is possible that KBS possibly has a hit K-drama with "Manhole." It has previously been explained that the time slip concept is very popular now. However, the fact that the main lead characters are played by K-pop idol actors must be stressed.

Over the course of Hallyu, many Korean television networks have cast K-pop idols in hopes of attracting attention. Their popularity often bring in scores of viewers who idolize them in their respective K-pop acts.

The only issue with K-pop idols being given main lead parts are the fact most of them are terrible at acting. Pertaining to "Manhole," it looks like KBS is negating this general fact with Kim Jaejoong and Uee. Jaejoong is a seasoned actor in both K-dramas and K-movies and even had a prominent role in a past time slip K-drama, "Time Slip Dr. Jin." Uee is recognized as one of the best K-pop idol actors in which she actually is believable when she does act. This is best seen in "Marriage Contract" in which she won numerous awards for her lead role as Kang Hye Soo.

Ultimately, KBS wants to continue their success with the Wednesday and Thursday time slot at 9:55 p.m. KST. Right now, "Queen for Seven Days" is airing on it, but the two K-dramas before it, "Chief Kim" and "Queen of Mystery," have both enjoyed high viewership. "Manhole" will air after "Queen for Seven Days" concludes.