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Cha Woong Ki is a South Korean singer and actor. He is a former member of the Korean Boygroup "TO1." He graduated from Hanlim Arts School and is currently attending the Seoul Institute of the Arts.

TO1 initially debuted under the name T0O in 2020 after being formed on the Mnet survival show "World Klass;" they rebranded as TO1 in March 2021. On May 24, 2022, WAKEONE Entertainment announced that the group would temporarily be halting all activities to reorganize and Woong Ki's departure was announced the next month.

On June 22, 2023 WAKEONE released official statement announcing Woong Ki's departure from the agency.