Blackpink have 4 members, they debut succesfully and gained many fans around the world, After holding their debut performances YG announce to the whole world the most shocking thing "Blackpink have a hidden member" after those words escape in his mouth All Blackpink members got super confused, as they dont know who it is, "She's been training secretly" "She is the hidden star of Blackpink, and also YG entertainment "Sorry if i made a decision that you guys dont know" "Its for everyone's best" "I've decided that, Blackpink will be 5, and not 4 anymore" "So please.. Welcome warmly" "Kim Yuna"