The song was eventually certified Gold by the Recording Industry Association of Japan for 100,000 single track downloads.

[5] Meanwhile, the digital single was released in several Asian countries including Japan, Hong Kong, Singapore and Taiwan by Universal Music Group.

[6][7][8] A limited CD + DVD edition of the single, which included a bonus music video for "Galaxy Supernova", was released in Japan by Nayutawave Records.

Jeff Benjamin from Billboard praised the song's catchy "earworm hooks" and compared it to the group's previous Japanese singles "Mr.

[3] Patrick St. Michael, writing for The Japan Times, picked "Galaxy Supernova" as one of the outstanding songs that "play to [the group]'s strengths" on its parent album Love & Peace and labelled it a successor to "Mr.

[26] The video features the members wearing multicolored jeans and outfits, dancing in a "flashy virtual reality world", as described by Benjamin.

[3] A behind-the-scenes video was released on September 20, 2013, featuring scenes from the photo shoot for the Samantha Thavasa Jeans collection as well as the group practicing their choreography.

[27] To promote the song in Japan, the group gave a Secret Live performance of "Galaxy Supernova" and "Gee" to 200 fans in Tokyo on the release day of the single and held a "Premium Talk" event on September 19 in Osaka.