NiziU is a Japanese girl group formed by JYP Entertainment and Sony Music Entertainment Japan through the reality-survival program Nizi Project (2020). The group is composed of nine members: Mako, Rio, Maya, Riku, Ayaka, Mayuka, Rima, Miihi, and Nina. Active in both Japan and Korea, NiziU debuted on December 2, 2020, with the release of their debut single "Step and a Step", and made their Korean debut on October 30, 2023, with the release of their single album "Press Play".