tvN’s new Monday–Tuesday drama Spring Fever is off to a solid start, posting mid-4% ratings in its premiere week and quickly building buzz for its warm, romance-forward storytelling.
According to Nielsen Korea, the drama’s first episode, which aired on May 5th, recorded a 4.8% nationwide viewership rating, followed by 4.6% for episode two.
Episode one introduced high school teacher Yoon Bom, played by Lee Joo Been, who relocates to a rural town, and Sun Jae Gyu, a devoted local with a quietly intense streak portrayed by Ahn Bo Hyun. Their first encounter is anything but smooth: Bom is taken aback by Jae Gyu’s rough first impression, only to see his unexpected softer side when he defends her after the school principal orders her to fetch coffee—instantly setting the stage for intrigue between the two.
In episode two, Jae Gyu uses a money tree plant he gifted Bom as an excuse to casually insert himself into her life, remarking, “Guess we’re on a first-name basis now.” Bom, meanwhile, becomes the advisor for Jae Gyu’s nephew Han Gyeol’s school energy club, pulling her back into his orbit. Though she initially tries to avoid him, her guard gradually lowers as she finds herself drawn in.
bom always reminds herself not to smile and be happy, but when she talks to jaegyu she accidentally starts laughing 🥺 #springfeverep2 pic.twitter.com/qhdLd2CZzR
— ㅆ (@fromthescenes) January 6, 2026
Jaegyu is ridiculous! You never know what he’s gonna do next 🤣🤣🤣🤣#SpringFever #SpringFeverEp2 pic.twitter.com/FBnol8n35Q
— Kayla 💙 (@BluKimchiKdrama) January 6, 2026
The drama also weaves in a parallel youth storyline. Longtime second-place student Choi Se Jin runs away under academic pressure, prompting Bom and Jae Gyu to rush to Seoul to find her. After learning she’s on the subway, tension spikes when they spot her with a mysterious man. In one of the episode’s most talked-about moments, Jae Gyu sprints between stations and leaps onto the train just before the doors close, catching Bom at the waist as she stumbles—a scene likened by viewers to a tango move.
Double bohyun’s salary please! He signed for a romcom drama but they make him doing all those long running and jumping. at this point he’s playing a superhero movie 😭
Another reason why bohyun is so perfectly cast as jaegyu. His stamina is insane#SpringFever #SpringFeverEp2 pic.twitter.com/6yq4DDClyy
— gie |seon jaegyu🌸🍃 (@yoonthoria) January 6, 2026
The moment triggers Bom’s memory of a similar incident from the past, deepening the mystery around their connection.
The ending 🥹
Jaegyu came just in time before the door closed. He caught bom who’s almost falling and because of that, she finally remembered him, the person who once caught her before in the exact position#SpringFeverEp2 #SpringFeverpic.twitter.com/QCtkVy22EC
— gie |seon jaegyu🌸🍃 (@yoonthoria) January 6, 2026
Following the broadcast, viewers flooded online with reactions like, “Bom is already falling for Jae Gyu—and so am I,” “The height and build difference between Ahn Bo Hyun and Lee Joo Been is doing things,” and “Time flew by. How is it already over?”
its always the army green shirt, black watch and his HUGE biceps 🥴 #SpringFever #SpringFeverEp2 pic.twitter.com/3sd6rrCuOS
— reign | ✨ (@reign_fangirl) January 6, 2026
Spring Fever airs its third episode on the 12th at 8:50 PM KST.
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