Out Flow is a compilation album by Japanese music production unit I've Sound and volume five in their Girls Compilation album series. It was released in a limited edition box set with the Lament album and the I've P.V Collection Vol.3: See You DVD on September 5, 2003. The two albums later received individual releases on October 30, 2003.The songs on this album come from various adult PC games and CDs they have contributed to. It also includes a new title track sung by Mell.