The subject appears to refer to a specific digital file associated with the popular Japanese album Girls Forever by the K-pop group KARA , which was released in November 2012.

: In social media contexts, "Girls Forever" is a common tag for lifelong friendships, reunions, and celebrations of shared history. Potential Origins of File ID "1404"

: Most prominently, Girls Forever is the title of KARA's third Japanese studio album, featuring hit tracks like "Electric Boy" and "Jet Coaster Love".