K-pop girl group Kiss of Life—comprising members Julie, Natty, Belle and Haneul—were formed by S2 Entertainment in 2023 and made their official debut with their self-titled EP and its lead single "Shhh" that same year. Released in July 2023, Kiss of Life went to number 22 on South Korea's Circle Album Chart and featured the single "Bye My Neverland" as well as solo tracks from each of the group’s four members: "Sugarcoat" by Natty, "Countdown" by Belle, "Kitty Cat" by Julie and "Play Love Games" by Haneul. The group unveiled their second EP, Born to Be XX, in November 2023, which was fuelled by the lead singles "Bad News" and "Nobody Knows." In 2024, the group released the "Sticky" single with "Te Quiero" on the flipside. On October 15, 2024, the group released a new EP Lose Yourself, featuring tracks like "R.E.M" and "Get Loud". The group released the special digital single "Kiss Road" on May 7, 2025, marking the conclusion of their first world tour of the same name. Later, on May 19, KISS OF LIFE released their fourth mini album 224 on June 9. They made their debut in Japan with the EP Tokyo Mission Start in November 2025.