KAJA

KAJA is a six-member Japanese and South Korean boy group under Sony Music Entertainment Japan and Sony Music Entertainment Korea. They released a pre-debut single on September 4, 2024, titled “Prologue ~ The Deepest Blue.” They made their official debut on September 18, 2024, with the single “Overture ~ The Blue Wave.” They debuted first in Japan and then in South Korea. They were originally called KJRGL, but changed their name to KAJA on October 1, 2025. The name KAJA, meaning 'Let's go!', expresses the determination to move forward together with the fans.