999_yujin

• Instagram
• X (Twitter)

Choi Yu-Jin is a South Korean singer and actress born on August 12, 1996, who debuted in 2015 and performs under the mononym Yujin. She is a member of the girl group Kep1er under Cube Entertainment and previously performed with CLC, and she served as Kep1er's leader from 2022 to 2024. She posts photos on Instagram as @utokki_u and also maintains an X account under the handle @999_yujin.