Serial :
Which Star Are You From 너 어느 별에서 왔니

Airing date: Starting March 13, 2006, every Monday and Tuesday on MBC at 9:55 p.m. (16 episodes)

Casts : Kim Rae Won ( Attic Cat, Love Story in Harvard ), Jung Ryu Won ( My Name is Kim Sam Soon, Autumn Shower)
Story :

Choi Seung Hui (Kim Rae Won), a scenario writer and film director, is troubled with his lover’s death.
Three years after his lover's death, he met the girl Kim Bok Sil (Jung Ryeo Won) who looks like his lover. But later knowing that she is the twin sister of his dead lover, he became very confused about his feelings on her.
The drama focuses on the virtues of a girl. They are simplicity, frankness, selflessness and trust on people, which are long forgotten by modern people. And the story tells how people around her are changed and turned pure as well.

Pics from the series :