Both include previous pre-release tracks released under "KARD Project" singles: "Oh Nana", "Don't Recall", and "Rumor".

[5][6] Two days later, the format of the album was revealed to include a booklet of 80 pages, two photo cards in two versions and a poster.

[9] On July 17, a special teaser for the title track was released, showing behind the scenes footage of the music video recording.

[10] The EP was released on July 19, 2017, through several music portals, including MelOn in South Korea, and iTunes for the global market.

[13] "I can't stop" is a remake of the 1992 single by ZAM, a co-ed idol group by DSP Media, mixing in future bass synths to the original song.

[13] All members of KARD participated in writing, composing, and the arrangement of "Living Good," in which they expressed their gratitude to fans, family, and friends who supported their debut.

The first music video teaser was released on July 10, 2017, previewing a few seconds of the song and showing the group in summery scenarios.

[27][28] The EP placed at number 10 on the Gaon Album Chart for the month of July 2017, with 12,962 physical copies sold.