tvN’s romantic comedy Spring Fever (Spring Fever) is set to introduce a new emotional twist, as newly released stills hint at rising tension in the budding romance between its two leads.

The series follows the evolving relationship between Yoon Bom, an emotionally reserved high school teacher portrayed by Lee Joo Bin, and Seon Jae Gyu, a warm-hearted and passionate man played by Ahn Bo Hyun. While Yoon Bom has previously tried to keep her distance due to personal boundaries, Seon Jae Gyu has remained persistent in expressing his feelings.
In the upcoming episode, the pair reunite late at night to build a shelter for a stray dog Seon Jae Gyu rescued during a storm. Although the moment appears calm on the surface, their exchanged glances reveal unresolved emotions and growing inner conflict, signaling a shift in their relationship.
Complicating matters further, a mysterious woman—portrayed by Son Yeo Eun—suddenly enters Seon Jae Gyu’s life. Rumors spread among the townspeople that she shares a deep connection with him, sparking visible jealousy in Yoon Bom and prompting her to confront feelings she had previously tried to suppress.

As questions arise about the woman’s true identity and intentions, viewers are left wondering how her presence will affect the fragile emotional balance between the two leads. With its subtle storytelling and character-driven tension, Spring Fever continues to build anticipation through emotional nuance rather than dramatic confrontation.
The next episode of Spring Fever airs on January 19 at 8:50 p.m. KST.