ArtistStarship Entertainment
Jiyu
Jiyu (지유), born Seo Ji-yu (서지유) on May 14, 2006, in Gwangan-dong, Suyeong-gu, Busan, is the leader, vocalist, rapper, and dancer of KiiiKiii. She has an older brother and grew up in Busan before moving to Seoul to train under Starship Entertainment. During her trainee period, she was dorm mates with what was then a fellow Starship trainee: Rei, who would go on to debut with IVE. The shared trainee experience across the two groups has been noted by fans as an example of how tightly the idol pipeline runs through the same buildings and hallways.
Jiyu is the youngest-ever leader of a Starship Entertainment girl group at the time of KiiiKiii's debut, a distinction that reflects both her technical capability and the kind of internal authority she held in the trainee system before the group was even formally revealed. Starship opened KiiiKiii's official social media accounts on February 10, 2025, beginning the pre-debut rollout; the group debuted on March 24, 2025, with their first mini-album "UNCUT GEM."
1 articles5 creditsDebut: March 24, 2025South Korean
Gallery
KiiiKiii, October 2025 / CC BY 3.0 / TV10 via Wikimedia Commons
Discography
2026
Delulu PackEP
2026
404 (New Era)Single
2025
Uncut GemEP
2025
I Do MeSingle
2025
Dancing AloneSingle
Fans Also Ask
What is Jiyu's real name and where is she from?
Jiyu's birth name is Seo Ji-yu (서지유). She was born on May 14, 2006 in Gwangan-dong, Suyeong-gu, Busan, South Korea, and relocated to Seoul to train under Starship Entertainment.
What are Jiyu's positions in KiiiKiii?
Jiyu holds the positions of leader, vocalist, rapper, and dancer within KiiiKiii. She is the youngest-ever leader of a Starship Entertainment girl group at the time of KiiiKiii's debut in March 2025.
When did KiiiKiii debut and what was their first release?
KiiiKiii debuted on March 24, 2025 under Starship Entertainment with their debut EP Uncut Gem. The group followed with the single I Do Me, establishing their sound as a performance-driven girl group with Jiyu leading as both vocalist and rapper.
Was Jiyu connected to IVE's Rei during her trainee years?
Yes. During her training at Starship Entertainment, Jiyu was dorm mates with Rei, who would later debut with IVE. The shared trainee experience has been widely noted by fans as a snapshot of how interconnected the idol training ecosystem is.
What MBTI type does Jiyu identify with?
Jiyu has identified with both ISTJ and ESTJ, suggesting a structured, dependable personality that suits her role as group leader. Her representative color within KiiiKiii is magenta and her representative emoji is the snail.
