Sohee and Sora are sisters. Sohee is the elder sister that would do anything to get what she wants. On the other hand, Sora is the younger sister who is willing to give up anything to her sister. What if one day Sora encounter her secret crush and her sister's ex- boyfriend, Im Siwan. Siwan was Sora's biggest crush,one day Sora wanted to reveal her feelings to him but Sohee confessed first to him. Unfortunately, Siwan