Style of Jang Keun-Suk and Yoona in the movie Love Rain

At a train station in Hokkaido, Japan, Joon (Jang Keun-Suk) and Ha-Na (Yoona) bump into each other. Ha-Na's cellphone falls into Joon's pocket without either person noticing. Joon is a photographer and a playboy. He came to Hokkaido for a photo shoot. Ha-Na is a student studying in Hokkaido and about to depart back to South Korea.
Later, Joon hears an odd cellphone ringtone. Joon then realizes that he has someone else's cellphone in his pocket. Meanwhile, Ha-Na goes to a shooting site to retrieve her cellphone, but Joon isn't there. Because of Joon's constantly changing schedule, Ha-Na's misses him three separate times. Finally, Ha-Na goes to Joon's hotel. After waiting until past midnight in the hotel lobby for Joon, Ha-Na decides to go into Joon's hotel room to retrieve her cellphone. Nobody is in the room and the door is unlocked. Ha-Na finds her cellphone, but suddenly Joon and a model walk through the door ...

Source : http://asianwiki.com/Love_Rain_(Korean_Drama)