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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.

Also Known As: O To One
Genre: K-pop
Years Active: 2016–2017
Current Members:
Houxiu TV,FNC China
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