On May 2017, Hyuna debuted along with fellow labelmates and Pentagon members Hui and E'Dawn in a new sub-unit group. The promotions for their first mini album 199X went on until the end of the month. Later in July, Hyuna revealed in an interview for Grazia magazine that she was preparing a new comeback to be released during the summer.
Release
Finally, on August, Cube Entertainment revealed her return to the Korean music scene was supposed to happen on September, but they decided to do it sooner because Hyuna couldn't wait to meet with her fans again, so it was pushed forward to the end of August. The first teaser image was unveiled on August 8, with the name of the mini album being revealed later on August 17, along with black and white intimate pictures of Hyuna without make-up. The images also confirmed the EP to be released on August 29. On August 23, the company revealed the title song to be called "Babe", which was composed by Hyuna herself, Shinsadong Tiger and Beom x Nang. The tracklist was unveiled on August 24 through her official YouTube channel, along with an audio snippet of each song from the album. The mini album was officially released on August 29 through many Korean online music services, including Melon. For the global market, the album was made available on iTunes. It was also released in physical format.
Music video
On August 27, a teaser for the music video of "Babe" was released. The full music video, which was released on August 29, features Hyuna going back and forth to another dimension.
Promotion
Hyuna held the first comeback stage for the album during MBC's Show Champion on August 30, where she performed the songs "Babe" and "Dart". The promotions continued on Arirang's Simply K-Pop and KBS's Music Bank on September 1, MBC's Show! Music Core on September 2, SBS's Inkigayo on September 3, and Mnet's M Countdown on September 7.
Commercial performance
Following debuted at number 9 on the Gaon Album Chart on the issue dated between August 27 and September 2, 2017. For the month of August, it appeared on the monthly edition of the Gaon Album Chart at number 28, with 5,773 physical copies sold. The album also entered Billboards World Albums Chart at number 5 on the week of September 16, 2017.
