Kim Hee Sun plays Cha Hae Won in the new weekend drama "Wonderful Days" with Lee Seo Jin and Ok Taecyeon.

Lee Seo Jin plays Kim Hee Sun's first love.  Taecyeon and Kim Hee Sun work together and argue a lot. There's even a scene in which they physically fight.

These actors will not be the first attractive stars Kim Hee Sun has worked with. She last appeared in "Faith: The Great Doctor" with Lee Min Ho playing her love interest.

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