Aside from the heartwarming story, the series also offers us many LSS-worthy songs! Here's the latest OST MV of "It's You by Colde.🎶 Stream #BlueBirthday, starring #RedVelvet #Yeri and #PENTAGON #HongSeok, exclusively on WeTV 👉 https://bit.ly/bluebirthday. 📲Download WeTV App: iOS 👉 https://bit.ly/AppleWeTVph Android 👉 https://bit.ly/AndroidWeTVph #WeTVAlwaysG #WeTVPinas #WeTVAlwaysMore