4U, a four-member group under STARTO ENTERTAINMENT celebrating its 15th anniversary, releases its long-awaited debut single on November 11, 2026. The stylish city-pop title track was newly written by Koichi Domoto. The coupling tracks were provided by Kohei Dojima, Kenichi Maeyamada, and Koji Ide, distinguished songwriters who have supported 4U throughout its 15-year career.