[3] She took some guest and minor roles in several Korean movies and television series such as Juror 8 and Hellbound,[4] before getting international recognition for playing the childhood Sunja in Pachinko.
[5] She was only 10 years old during the filming, and she was immersed in the character by understanding what the Koreans had experienced during the Japanese colonization.
[7] After Pachinko, she worked on some other Korean television series such as Green Mother's Club and Secret of the Lightning Cloak, and signed an exclusive contract with Saram Entertainment[8] before auditioning for the role of Choi Ro-hee in The Kidnapping Day.
She was praised for her delicate acting skills that is unusual for a child actress her age[10] and for her ability to maintain a good chemistry with the lead actor, Yoon Kye-sang.
[13] Another fellow actress in the drama, Seo Jae-hee, also praised her, stating that Yuna has a pure, lovely, wise and innate personality.