Looks like not only will the beyond strange onscreen coupling of Lee Bum Soo and Yoona from SNSD be happening in the upcoming KBS drama Prime Minister and I, the production went on a casting roll today with four new additions to the cast. Playing the second male lead is the always adorable Yoon Si Yoon, who was last in the tvN cable drama Flower Boy Next Door and is currently part of the ensemble variety show Barefoot Friends. To be fair, the character of the forty-something capable Prime Minister looks tailor made for Lee Bum Soo, so it’s not like Yoon Si Yoon is getting shafted by a less capable actor and punted to playing the second male lead. Yoon Si Yoon plays Yoona’s first love and they grew up together in the orphanage. He’s the chief of staff for the Prime Minister and a very accomplished young man. The drama is about a harried Prime Minister unable to raise his family of motherless kids and in steps the “young mom” played by Yoona and a sweet romantic love story ensues that is full of family warmth. I think KBS is giving me two leading men I never miss just to balance out the iniquity of casting Yoona, and if that is the case then they have succeeded. I’m in. Rounding out the main cast is perpetual second female lead Chae Jung Ahn, who was last in When a Man Loves getting between Song Seung Heon and Shin Se Kyung. I neither like nor dislike her, so if any drama needed to fill a token second female lead then it might as well be her. To double down on the hot ahjussi quotient in this drama, Ryu Jin is reportedly joining, while the younger Lee Min Ho (of Rooftop Prince and The Moon Embraces the Sun) will be returning to television as well as part of this cast. Prime Minister and I starts filming at the end of the month for an early December premiere on Mon-Tues after Marry Him If You Dare.