While Ahn Bo-hyun and Lee Joo-bin anchor the main romance in “Spring Fever,” it’s the drama’s youthful ensemble that promises to deliver the heartwarming coming-of-age storyline viewers crave. Set to premiere January 5 on tvN, this romantic comedy showcases rising talent alongside seasoned actors.
Table of Contents
Student Cast & Character Breakdown
| Actor | Character | Role Description | Notable Work |
|---|---|---|---|
| Cho Jun-young | Seon Han-gyeol | Top-ranked student with hidden feelings | Spirit Fingers |
| Lee Jae-in | Choi Se-jin | Second-place rival who dislikes Han-gyeol | Hi-Five |
| Ahn Sang-jin | Kim Dae-han | Energetic twin bringing playful charm | TBA |
| Choi In-woo | Kim Min-guk | Lively twin injecting vibrancy | TBA |
| Lee Jae-moo | Oh Dong-pyo | Jae-gyu’s ally & Han-gyeol’s friend | TBA |
The Academic Rivals Romance
Cho Jun-young as Seon Han-gyeol leads Shinsu High School’s academic rankings but harbors a gentle crush on his rival. The character embodies the classic quietly-devoted type who observes from afar, hoping to make his crush smile despite her obvious dislike. Cho brings experience from his previous youth-centric roles, understanding the nuanced emotions of teenage affection.

Lee Jae-in as Choi Se-jin plays the perpetually second-ranked student who openly resents Han-gyeol’s academic dominance. Her character’s competitive edge creates the perfect setup for the enemies-to-lovers dynamic that Korean dramas execute brilliantly. The push-and-pull tension between academic achievement and budding romance forms the backbone of their storyline.
Twin Trouble & Village Dynamics
Jin Kyung’s twin sons, portrayed by Ahn Sang-jin and Choi In-woo, add comedic relief with their mischievous energy. Their playful antics contrast beautifully with the more serious academic rivalry, ensuring the drama maintains its lighthearted tone despite emotional depth.
Lee Jae-moo as Oh Dong-pyo serves as the connector between generations, bridging Jae-gyu’s adult world and Han-gyeol’s student circle. This character provides comic timing while highlighting the drama’s small-town setting where everyone knows everyone.
Why This Youth Ensemble Matters
Coming-of-age arcs in K-dramas often steal scenes from main romances because they capture universal experiences—first love, academic pressure, friendship loyalty, and identity formation. “Spring Fever” wisely dedicates significant screen time to these younger characters, creating a multi-generational narrative that appeals to broader audiences.
The casting choices reflect tvN’s commitment to discovering fresh talent while telling authentic youth stories. For more coverage of rising K-drama stars, explore our entertainment features on Technosports.
“Spring Fever” premieres January 5 at 8:50 p.m. KST on tvN, with streaming available on Prime Video and Viki.
FAQs
What makes the student storyline special in Spring Fever?
The classic academic rivals-to-lovers arc between Cho Jun-young and Lee Jae-in mirrors the main romance, creating thematic resonance across generations.
Where can international viewers watch Spring Fever?
International audiences can stream “Spring Fever” on Prime Video and Viki with English subtitles starting January 5, 2026.





