Flow is the third Korean-language extended play (EP) by South Korean singer Onew.

[1] During an appearance on the music talk show The Seasons, he said that he made the change because he felt he was getting too comfortable at SM and wanted to pursue new challenges.

[8] Ahead of its release, he uploaded concept images themed around the days of the week to his social media accounts,[9] followed by highlight clips containing snippets of the songs.

Onew decided he wouldn't be appearing on music shows to promote this EP, preferring to use that time to plan for his live performances.

[12] He held a series of concerts, titled Hola!, in South Korea, Taiwan and Japan, where he performed songs from the EP.