Two sisters who share an unbreakable bond.

Two lovers who share an unstoppable love.

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History of the Kwon sisters

These two girls have been together through ups and downs. They have lost their parents after an unfortunate car accident. Yuri was 12, Yoona just turned 11. Since Seo Joohyun's father is a very close friend and deeply in debt with their parents he supplied the Kwon sisters enough money until both of them finished their collage education.

Kwon Yuri

Kwon Yuri can be possesive when it comes to her sister. At the age of 23, she has become too attached to her sister but she knows her limit. She gives Yoona some personal space and allows her to wonder off. There is one thing Yuri is guarding her sister. Yuri doesn't like it when her sister gets too close with boys.

Kwon Yoona

Kwon Yoona understands her sister behavior more than everyone. She sees how caring and loving her sister is to her. Still there are times that she can't help but think that something or someone is still missing.

Lee Donghae

To what extent will he do to achieve Yoona's heart?
To what limit he can reach to get Yuri's approaval?