O21 (O To One) was a South Korean-Chinese girl group under Houxiu TV and FNC China. They debuted on June 20, 2016 with the single "Show Me". They disbanded in 2017 due to the THAAD issue.


  • RuRu (루루) - vocalist, lead rapper
  • Sona-K (소나-K) - sub-vocalist, main dancer
  • Yuri (유리) - vocalist, lead dancer
  • Jiyoung (지영) - vocalist
  • Wei Yang (웨이양) - leader, visual, lead vocalist
  • Lina (리나) - main rapper, vocalist


Digital singles

Official links

Community content is available under CC-BY-SA unless otherwise noted.