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back in high school, park haneul was the object of everyone's affection, the popular girl who captivated hearts. yoo jung-in dedicated himself to his studies in pursuit of becoming someone worthy of dating her. however, life had a different plan as haneul married another man. now, jung-in finds himself working at a guesthouse, surrounded by bittersweet memories that refuse to fade away. but then, out of nowhere, a familiar face reappears and asks to stay at the guesthouse. will this unexpected reunion reignite old flames or open doors to new possibilities?