OnlyOneOf

OnlyOneOf is a six-member group that consists of KB, Rie, Yoojung, Junji, Mill, and Nine. They made their debut as 7 members with Time Leap and Savanna on May 28, 2019, as 8D Creative’s (RSVP) first boy group. Love left the group in August 2021. On August 8, 2025 KB confirmed that he has left the company and is currently independent. On October 30, 2025, 8D Entertainment stated that the group’s contracts had expired and that the company would no longer manage them. In a series of messages sent on Fromm, Mill stated that OnlyOneOf had not ended and encouraged fans to look forward to his future activities.