UX1

UX1 (유엑스원) is the fourth subunit of U-KISS, formed by members Hoon, Kiseop, and Kevin, who officially debuted on November 26, 2025, with the digital single “Halo.” Announced earlier that month and accompanied by plans for Japanese concerts, the unit quickly followed their debut with the special single “Winterland” on December 4, showcasing a refreshed vocal and performance dynamic within the long-running U-KISS brand.