You're the First

Yoona found her very first love after entered a university in her local place.She didn't expect anything until she met Krystal.When their eyes met for the first time,she already fell in loved with Krystal.Krystal was a girl that likes to be alone by herself so it was surprising that she accepted Yoona.She can't forget those cold eyes that gave chills to her body when she stared at it for the first time.She can't forget how her heart almost burst out of her chest when their hands intertwined for the first time. They lived in a very happy lives like other couple did.Until one day Krsytal told Yoona that she have to live in LA to further her study in fashion designer.Yoona can't accept it at first but Krystal promised she will return back to Korea after her study.They promised they will wait each other no matter how many years.Can they kept those promised?Will one of them broke the promised?Will they met again?