A Korean classmate and former close friend of Zheng Yihua who becomes a bitter rival after developing an unrequited crush on the same surgeon, resorting to malicious gossip to sabotage Zheng's reputation.
Initially share a deep, trusting friendship as overseas classmates.
Soo-ok falls deeply in love with Lee, but his affections are directed elsewhere.
Soo-ok deliberately directs malicious rumors toward Zhang to damage Zheng's reputation.
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