K-pop group LE SSERAFIM are returning to Overwatch for a third collaboration, revealed via a teaser in the trailer for the game's upcoming season four, "Heroes of Busan." The tie-in appears timed to coincide with the group's performance at BlizzCon's closing ceremony in Anaheim on 13 September, which marks the convention's first return in some time, and points to fresh in-game skins alongside possible new music.

The partnership began in 2023 around the group's first BlizzCon appearance, which also produced the collaboration track "Perfect Night," followed by an additional skin set added last year. LE SSERAFIM are currently touring Japan as part of their PUREFLOW World Tour, promoting their second studio album, PUREFLOW Pt. 1, before heading to the US for BlizzCon and further tour dates, with fans speculating the trailer's teased music clip could signal a new song.