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1. Bölüm Seven years after a lab explosion, Chan returns home for work and unexpectedly meets Haran again.
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2. Bölüm Chan sees that Haran is frozen in winter and suggests a three-month trial friendship.
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3. Bölüm Haran rejects Chan's three-month friendship offer, but Chan is undeterred.
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4. Bölüm As Chan and Haran grow closer, a mysterious sound begins to haunt him, revealing gaps in his memory.
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5. Bölüm Chan and Ha-ran find a Gyeongju escape but a resurfacing memory puts Chan in a brewing storm. Unbeknownst to Ha-ran, Chan is drawn into a brewing storm.
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6. Bölüm Chan's sudden exit for the U.S. leaves Ha-ran reeling. As longing sets in, the three sisters clash and Na-na faces an unexpected incident.
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7. Bölüm Chan and Ha-ran reunite after his U.S. return. At a SHIM party, their bond grows while Chan starts recording his resurfacing memories.
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8. Bölüm Ha-ran helps Chan reveal his father's watch secret. After their reconciliation, Ha-ran wins an award but meets a shocking face at the ceremony.
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9. Bölüm Chan's unintentional lie about the fountain pen weighs on his conscience. To stay close to Ha-ran, he must decide if the truth is worth the risk.
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10. Bölüm Chan's envy of Su-jin and Ha-ran grows. As Ha-ran celebrates Chan’s birthday, she moves past her "winter" while Nana makes a choice in Chuncheon.
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12. Bölüm