On April 24, Luna went on Naver V live with the title, '!t Live Special: The 3rd MUGI-BOX 'LUNA'', and talked about her long-awaited solo comeback in 2 years.�

During the broadcast, Luna said, "Today, I wore purple which represents f(x)." She added, "I'm aware that fans are dearly waiting for us. We will be greeting you guys soon so don't worry so much."

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f(x) has been on a hiatus since the album '4 Walls' back in 2016.�