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Kim Chaewon, the school's sweetheart. Many girls and boys would give anything to be with her, but she only want's one person. Miyawaki Sakura.

Miyawaki Sakura is the school's Ice Queen. She's not interested in anyone except her bestfriend Lee Chaeyeon.

But Lee Chaeyeon is the Chaewon's half-sister from her mother. Chaeyeon also loves Sakura and choses to be with her.

How will Chaewon react? Her own sister is her rival? Maybe, maybe not? Let's go and see.