X8EE is an eight-member Japanese male dance and vocal group. They were formed through “PROJECT ‘X’ AUDITION 2025,” a joint project between Victor Entertainment and THL.The members are Naotake Tsuchiya (born December 22, 1999, in Chiba Prefecture), Masato Miyakawa (born July 11, 2000, in Kumamoto Prefecture), Daiki Mori (born March 21, 2001, in Okayama Prefecture),Kohei Iida (born June 5, 2005, in Saitama Prefecture), Haruto Uehara (born May 22, 2003, in Shizuoka Prefecture),Seiga Tomio (born March 31, 2004, in Osaka Prefecture), Tatsuma Hizuka (born December 19, 2000, in the Philippines), and Norie Matsubara (born January 19, 1999, in Tokyo).They were unveiled in December 2025 and released their first digital single , “Will be us.” In January 2026, they held their debut live concert in Tokyo. Since then, they have actively held free live performances and organized events nationwide, honing their performance skills.On June 3, 2026, they made their major-label debut with the release of their first single , “Boom Boom Boom.” This powerful dance track marked a striking debut, debuting at No. 8 on the Oricon Daily Chart.