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Sung-eun's nights are constantly disrupted by loud noises from her neighbor. This annoyance turns into a surprise encounter when she literally bumps into the source: her handsome and charming neighbor, Eun-sung. They share similar names, the same university major, and many classes, leading to a quick and unexpected connection.

Despite his charming exterior, Sung-eun learns that Eun-sung, the private student representative, carries a somewhat questionable reputation. As they grow closer, Sung-eun hides her own true feelings, all while beginning to suspect that Eun-sung might also be concealing something significant from her. Their budding relationship is built on a foundation of unspoken secrets and unanswered questions.

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