Korean Drama News “Blue Birthday” Teaser Shows Grim Death Anniversary Notification Set Against A Sweet Photo Yeri and Hong-seok's web drama, "Blue Birthday", reveals a teaser that shows a death anniversary notification amidst happy birthday messages.
News Red Velvet’s Yeri & PENTAGON’s Hong-seok Confirmed To Star In Web Drama “Blue Birthday” Red Velvet's Yeri and PENTAGON's Hong-seok are confirmed to play the lead roles in PLAYLIST'S upcoming web drama, Blue Birthday.
News Red Velvet’s Yeri & PENTAGON’s Hong-seok Likely To Star In New Web Drama “Blue Birthday” Red Velvet's Yeri & PENTAGON's Hong-seok are in talks to star in PLAYLIST's new web drama, "Blue Birthday".