Hanbyuk isn’t thrilled when his new neighbor turns out to be the cold, aloof Yeomin. After hearing Yeomin moaning through their too-thin apartment walls and having an awkward interaction the next day, Hanbyuk gets a glimpse of his neighbor with his guard down. He's shy. Cute, even. Hanbyuk decides to double his efforts to befriend his neighbor and, surprised by each other and themselves, they grow closer until the lines of their friendship blurs into something...more.