It has been officially confirmed that Red Velvet’s youngest member, Yeri, will be taking on the lead female role alongside PENTAGON’s Hongseok, as the two will star in the upcoming web drama “Blue Birthday.” The fantasy/romance drama will focus on the story of Oh Harin (Yeri) who travels back in time through the mysterious pictures Ji Seojun (Hongseok,) her first love who died ten years ago, left behind. Other cast members include: Lee San Joon, Kim Kyul Yoo and Park Joo Hyun. The cast and crew held their first script reading on April 5 with hopes to film soon so that they can premiere in the second half of the year.