Sunny - Eunhyuk's stepsister Yoona - Donghae's younger sister    Sunny and Yoona wanted their brothers to be together.  And their plan began.    Well, for Eunhyuk and Donghae, they started out acting as friends for their sisters, but what if they instead fall for each other?      This story is about only Eunhyuk and Donghae... My fav otp. ^^ No idea where this will lead to..  Have fun reading <3 <3