OnlyOneOf Profile: OnlyOneOf Facts OnlyOneOf (온리원오브) is currently a six-member group that consists of KB, Rie Yoojung, Junji, Mill, and Nine. Love left the group in August 2021. They made their debut with “Time Leap” and “Savanna” on May 28, 2019, as 8D Creative’s (RSVP) first boy group. OnlyOneOf Fandom Name: lyOn OnlyOneOf Official Fan Color: – … Continue reading OnlyOneOf Members Profile