한 YooOne YooOne (유원) was a South Korean Male Artist. He started in group OTC. He retired in 2021. Read All General Information International Stage Name : YooOne Domestic Stage Name : Pronounce 유원 Full Name : Kim Jeong-hyun Full Domestic Name : Pronounce 김정현 Date of Birth : 1994-09-11 (age 31) Zodiac : Virgo Country of Birth : South Korea Related Artists : OTC - Leader,Vocal Artist retired : 2021 Original group : OTC (No longer a member) Images No images yet