Written by Kenzie, Jonatan Gusmark, Ludvig Evers, Adrian McKinnon, and Ellen Berg, it was released as the EP's lead single by SM Entertainment on June 24, 2024.
On June 10, 2024, SM Entertainment announced that Red Velvet would be releasing their seventh Korean extended play titled Cosmic.
[5] It was described as a dance-pop song characterized by "synth strings and disco rhythm" with "fairytale-like" lyrics about "about meeting [the listener], a lonely traveler who crash-landed on [Red Velvet] and learning about infinite love like the universe".
[11] In New Zealand, the song debuted at number 36 on the RMNZ Hot Singles in the chart issue dated July 1, 2024.
[14] Prior to the release of Cosmic, on June 24, 2024, Red Velvet held a live event called "Red Velvet 'Cosmic' Countdown Live" on YouTube, TikTok, and Weverse, aimed at introducing the extended play and its songs, including "Cosmic", and connecting with their fanbase.