In the 7th episode of tvN’s Resident Playbook, a notable development occurs between the characters Oh Yi-young (played by Go Youn-jung) and Koo Do-won (played by Jung Joon-won), where Do-won starts to show signs of affection for Yi-young.

Yi-young, a first-year obstetrics and gynecology resident, had previously confessed her feelings to Do-won, a fourth-year chief resident. However, Do-won initially rejected her, leaving Yi-young heartbroken. Despite this, Do-won’s feelings begin to shift, and in this episode, the drama builds tension around the two characters’ evolving relationship.

After Yi-young has a tense encounter at the hospital where she must confront a colleague, she heads home, only to be approached by Do-won. The two share a brief interaction as Yi-young walks alone, and Do-won shows concern for her well-being, hinting at his growing feelings. He worries about her safety, especially when she walks alone in the dark, even jokingly suggesting that she might meet a stranger.

Later, Yi-young finds herself in a high-stress situation when she is required to perform emergency surgery. The situation brings them even closer as Do-won, who had planned to go on vacation, misses his flight after hearing about the surgery. He rushes to the hospital, ultimately taking part in the procedure. His actions show his deep care for Yi-young, which doesn’t go unnoticed by her.

After the surgery, Yi-young shares a moment of gratitude with the anesthesiologist resident who helped during the procedure. Seeing this interaction from afar, Do-won feels a pang of jealousy, realizing that Yi-young is growing close to others, particularly the anesthesiologist. This only deepens his feelings, prompting him to send Yi-young a text message asking if she’d like to grab coffee sometime. Yi-young eagerly waits for his reply, and when Do-won checks his phone and smiles upon seeing her message, it signals a major shift in their relationship.

The episode ends with a sweet and subtle display of affection. Yi-young is waiting on the roof of the hospital, and as a sudden downpour occurs, the anesthesiologist offers her his umbrella. As Do-won arrives and sees them together, his jealousy rises, further intensifying the emotional tension of the scene.

This episode lays the groundwork for a blossoming relationship between Yi-young and Do-won, with hints of rivalry and deeper emotions coming to the forefront.