Just recently, LOONA introduced Olivia Hye; the 12th and final member of the girl group. Now, all members have been revealed and they are finally looking to make their full group debut. 

The new video by Block Berry Creative on April 13 teases fans for the 'Premier Greeting: Line & Up'. The dates of June 2 - 3 are also given, getting fans even more hyped for LOONA's big day. 

Watch the 'Premier Greeting' by LOONA above and stay tuned for more details on their official debut.