Won Bin
Ten years later, Joon-suh (Song Seung-heon) returns to South Korea as a successful artist. He goes back to his hometown. He encounters his old friend, Han Tae-seok (Won Bin), who stays at the hotel where Eun-suh (Song Hye-kyo) works as a telephone receptionist. Tae-seok, (who doesn't know about the brother and sister mix-up) falls in love with Eun-suh and manipulates her until she is fired from her job. One day Eun-suh sees Joon-suh and follows him to the beach where he is with his fiancée Yumi (Han Na-na) and Tae-seok. The two "siblings" finally meet again after ten years.