Actor Jin Ki-joo perfectly transformed into a passionate contract teacher, captivating viewers.

The new MBC Friday-Saturday drama "Undercover High School," which premiered on 21st, depicts the chaotic adventures of a National Intelligence Service agent who infiltrates a high school disguised as a student to track down the whereabouts of Emperor Gojong's missing gold bullion. In the drama, Jin Ki-joo plays Oh Soo-ah, a contract teacher responsible for Korean history at Byeongmun High School, and the homeroom teacher of undercover agent Jeong Hae-seong (Seo Kang-joon), showcasing her diverse charms throughout the premiere.

In that episode, Oh Soo-ah displayed various aspects, from the scent of a fresh, passionate novice teacher to mistakenly misidentifying the undercover Jeong Hae-seong as a delinquent student, conveying a lively and cheerful energy. Her first appearance, where she enthusiastically sang at a gathering, brought laughter right from the start when she made a shocking mistake of pulling off the wig of Vice Principal Baek Gwang-du (Oh Yong).

Later, she teamed up with Jeong Hae-seong, whom she coincidentally encountered at her mother's shop, to drive away a gang of delinquents. After having a crush on Jeong Hae-seong, she reunites with him as a transfer student in her class, displaying a delightful chemistry between teacher and student that kept viewers engaged.

In these scenes, Jin Ki-joo perfectly embodied her new character Oh Soo-ah, exuding a comic and lovely charm that was completely different from her previous roles. Showing a high synchronization rate with her character, she infused energy into every scene, proving her exceptional presence as a captivating female lead in the romance-comedy genre.

Previously, Jin Ki-joo showcased her broad acting skills in various works, including the dramas "Wednesday Afternoon 3:30", "Misty", "Come Here and Hug Me", "Love at First Sight", "Oh! Samgwang Villa!", "Starting Now, Showtime!", and "By Chance, You", as well as the films "Little Forest", "Midnight", and "Happy Country", establishing herself as a reliable actress. Notably, in "Sam-sik's Uncle", she portrayed the character Joo Yeo-jin, who possesses a strong and resilient inner strength, earning global acclaim for her delicate expressiveness and sincere performance.

With her unwavering ability to transform her acting across genres, expectations are high for Jin Ki-joo's refreshing and vibrant performance in "Undercover High School."

Meanwhile, the eagerly anticipated "Undercover High School" featuring Jin Ki-joo's new character will air every Friday and Saturday at 9:50 p.m., and will be available on Wave and Tving following the MBC broadcast.

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