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. 

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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.