NiziU will release their 4th single "Blue Moon" on December 14. 

The title track will be the group's first winter ballad. It's a song describing their feelings for an important person, which they felt for their fans during their live tour 'NiziU Live with U 2022: Light it Up' held from August to October. 

The single will be released in four different versions: Limited Edition A (CD+DVD), Limited Edition B (CD+Booklet), Regular Edition (CD-Only), and Fan Club Edition. The DVD will contain the jacket cover making footage. All types will come enclosed with a trading card.

A meet and greet event is scheduled for fans who purchase the single on February 12 at Makuhari Messe, then March 5 at Intex Osaka. More details these events will be announced via their official website at a later date.