During an appearance on the YouTube show Hyell's Club , aespa 's Karina expressed her surprise at the popularity of their song " Supernova ." She chatted with Hyeri about several topics, including her musical preferences within the group.

When asked by Hyeri about her favorite song between " Armageddon " and "Supernova," Karina answered without hesitation, " 'Armageddon' was so great that we wanted to record it and learn the choreography as soon as possible to perform it on stage." She added, however, that "Supernova" had received a much more enthusiastic reception, which left her perplexed, " Why do you like this song? I'm really curious."

Karina then explained that when they first heard "Supernova," the band thought the song might be too complex for the audience.

Following these confessions, many Korean fans and netizens shared their opinions about "Supernova" in a popular online community. The comments were varied:

"'Supernova' is light and kitschy, which seems to have contributed to its success. I prefer 'Armageddon', but I find 'Armageddon' to be really complex, haha."

“The first time I heard ‘Supernova,’ I knew it was going to be a hit.”

"'Supernova' is super addictive, I can't stop singing it. 'Su-su-su-supernova', lol."

"At first I thought the opposite of Karina. 'Supernova' was much better and 'Armageddon' more confusing."

"I'm not a fan of them, but I listened to 'Supernova' for two hours straight the first time I heard it, lol."

"That's because 'Supernova' seems to be aimed more at the general public."

It seems that the simplicity and catchiness of "Supernova" has indeed won the hearts of many listeners, contrary to Karina's initial expectations.