Yeonjun, a 14-year-old with a competitive spirit, harbors a lingering rivalry with classmate Soobin since their encounter in a childhood competition. Despite his teasing demeanor towards Soobin, there's an unexpected twist as Yeonjun grapples with developing feelings for his former adversary. His vivid imagination occasionally leads him to daydream about Soobin, with glimpses of admiration for Soobin's physique and youthful features, adding a layer of complexity to their relationship.