On September 19th, actor Lee Jong Suk shared a photo with "sibling", f(x)'s Krystal, on his Me2day.  The two were recently cast for the upcoming sitcom, 'High Kick 3', and will be playing the role of brother and sister. Lee Jong Suk wrote, "High Kick's Ahn siblings ^^.  We're trying to act friendly while rehearsing our script.  They say that it looks like our genders have changed, but really?  Please come up with many fun nicknames for the 'Ahn Siblings' and give us much support~ Yap!" The two are seen smiling for the camera while holding onto their scripts. It wouldn't be a far fetched to say that they could really pass for siblings with their resemblance, right? 'High Kick 3' is scheduled to begin broadcasting today on September 19th! Source + Photos: IS Sports via Naver