"Wing Wing" is a song recorded by South Korean girl group Kep1er for their first Japanese maxi single marketed as "Fly-Up".
On July 21, 2022, Wake One Entertainment announced Kep1er would be releasing their Japanese debut maxi single titled "Fly-Up" on September 7.
[5] "Wing Wing" debuted at number three on the Billboard Japan Hot 100 in the chart issue dated September 14, 2022;[6] on its component charts, the song debuted at number 40 on the Top Download Songs.
[7] It also debuted at number two on the Billboard Japan Top Single Sales in the chart issue dated September 14, 2022.
[10] Following the release of the "Fly-Up", on September 10 and 11, Kep1er held a live event called "Kep1er Japan Debut Showcase LIVE